Has a son Jasiel...His brother, catcher Luis Vicioso, was signed by the O's as an international free agent on Jan. 15, 2023. Mateo was at the signing day...Has a program in the Dominican Republic called JM3 where he mentors local baseball players, including hosting clinics and provides them with equipment.
2022
Made his second career Opening Day roster and first with the Orioles; spent the entire season on the active roster for the first time in his career...Set career highs in nearly every category including games (150), runs (63), hits (109), doubles (25), triples (seven), home runs (13), extra-base hits (45), RBI (50), walks (27) and stolen bases (35)...His 142 starts at shortstop were the most by an Oriole since J.J. Hardy's 159 in 2013...Led the American League and ranked second in MLB with 35 stolen bases; became the third Oriole (fourth occurrence) to lead the AL in steals, joining Brian Roberts (2007) and Luis Aparicio (1963 & 1964), and the sixth O's player (eighth time) since 2000 with at least 35 stolen bases...Won the Fielding Bible Award as the best defensive shortstop in MLB, per Sports Info Solutions; tied for second on the O's, ranked second in the AL and third among MLB shortstops with 14 Defensive Runs Saved; marked the second-most DRS by an Orioles shortstop since tracking began in 2012 (J.J. Hardy, 18, 2012)...Led AL shortstops and was tied for fourth among MLB shortstops with 11 Outs Above Average, per Statcast; his OAA were the most by an O's shortstop since tracking began in 2016...Ranked third on the O's and seventh among AL shortstops with 2.8 fWAR, per FanGraphs...Finished fourth on the Orioles and seventh among AL shortstops with 3.3 bWAR, per Baseball Reference; his 2.4 dWAR was tied for third in the AL and tied for seventh in MLB, and was the most by an O's player since Manny Machado had 2.7 in 2016 and most by an Orioles shortstop since J.J. Hardy had 2.8 in 2012...Tied for second in MLB with seven triples; became the first Oriole with at least seven triples in one season since Brian Roberts and Adam Jones in 2008...Became the first Orioles shortstop with at least 45 extra-base hits since J.J. Hardy in 2013...His 30.1 ft/sec Sprint Speed was tied for seventh in MLB, per Statcast; his 69 Bolts were sixth...Delivered a walk-off hit-by-pitch in the 10th inning against Matt Moore on 7/4 vs. TEX; was his first career walk-off of any kind and the first walk-off hit-by-pitch in extra innings in Orioles history (since 1954)...Hit a game-tying solo home run in the ninth inning off of Colin Poche on 7/27 vs. TB; marked his first career game-tying homer in the ninth inning-or-later...Homered twice and drove in five runs, both career highs, on 8/2 at TEX; his first home run in the third inning came on an 0-2 pitch, the first such long ball of his career...Set a career-high with five hits on 8/12 at TB, finishing 5-for-5 with two doubles, two runs scored, and two RBI; became the first O's batter with a five-hit game since Cedric Mullins on 6/5/21 vs. CLE, the first Orioles shortstop with five hits since J.J. Hardy on 5/6/12 at BOS, and the third Oriole (since 1954) with a five-hit game from the nine spot in the lineup, joining Rich Dauer (6/2/80 vs. MIL) and Mark Belanger (5/11/74 at CLE)...Broke a 2-2 tie with a one-out, three-run double in the eighth inning of the Little League Classic on 8/21 vs. BOS...Slashed .246/.304/.435 (30-for-248) with 28 of his 45 extra-base hits on the road compared to .195/.229/.321 (48-for-246) at home...Batted .277/.327/.489 (26-for-94) with 11 extra-base hits and 17 RBI in August; marked his first career month with 10+ RBI.
2021
Claimed off waivers from San Diego on 8/5 and made his Orioles debut on 8/6 vs. TB...Had a career-long 11-game hitting streak from 8/10-20, tied for the fourth-longest streak by an O’s batter in 2021 and was the second-longest streak in the majors at the time; also had a career-long 15-game on-base streak from 8/1-8/20...Hit safely in 23 of 31 games with an at-bat after joining the Orioles and slashed .280/.328/.421 (30-for-107); 10 of his 30 hits with the O’s went for extra bases (2 HR, 7-2B, 3B)…His 18 hits in his first 14 games with the Orioles were the most by an Oriole in his first 14 games with the franchise since Tim Beckham recorded 29 hits in that span in 2017; became the 27th player in club history (since 1954) to record at least 18 hits in his first 14 games with the O’s...Had seven multi-hit performances in 31 games with an at-bat after joining the O’s; had just three multi-hit efforts in his first 79-career games...Drew seven walks in 116 plate appearances with the Orioles for a 16.57 PA/BB, compared to just two walks in 93 plate appearances with the Padres for a 46.50 PA/BB...His 30.4 ft/sec Sprint Speed ranked tied for fifth in MLB, according to Statcast; one of nine qualified players with a Sprint Speed of at least 30.0 ft/sec this season...His 10 stolen bases ranked tied for seventh among rookies...Played five different defensive positions with the Orioles: 18 games (12 starts) at 2B, 17 games (15 starts) at SS, one start in LF, one start in RF and one game at 3B...Placed on the 60-day Injured List (right lumbar inflammation) on 9/14, ending his season.
2020
Was acquired by SD from the Oakland Athletics in exchange for a PTBNL (Junior Perez) on June 30, 2020... was transferred to the Injured List on Opening Day (July 24) and recalled from the 60-Day IL on August 13... Played in 22 games for the Padres and made 7 appearances as a pinch-runner with 2 runs scored...played 5 games at 2nd, 3 games in left field, 3 in right field, 1 in center, and 4 as the DH... Made his MLB debut on August 13 @ LAD and collected his 1st MLB hit on August 27 vs. SEA (a double)...had his 1st-career multi-hit game the next day on August 28 @ COL, going 2-for-5 with a double and an RBI... Had 4 pinch-hit plate appearances, going 1-for-3 with a double and a walk... Went 2-for-4 with RISP (.500)...On September 7 vs. COL, pinch ran for Greg Garcia in the 9th inning...scored from 1B on Jurickson Profar's walk off double...Mateo's speed was clocked by Statcast at 30.8 feet per second (MLB average was 27 ft. per sec)...he went 1st to 3rd (270 ft.) in 9.64 seconds for an average sprint speed of about 19.4 MPH.
POSTSEASON: Was named to the Padres Wild Card Series roster vs. STL but did not play...was not on the NL Division Series roster.
2019
Spent the entire season at Triple-A for the season consecutive year and batted .289 with 29 doubles, 14 triples, 19 home runs and 78 RBI in 119 games with Las Vegas…had career highs in batting, slugging (.504), OPS (.834), runs (95), hits (154), home runs, RBI, extra base hits (62) and strikeouts (145) and matched his high in at bats (532)…stole just 24 bases, which was his fewest since 2014 (had 11 in 15 games)…however, it was his fifth consecutive season with 20 or more steals…led the minors in triples for the second consecutive season and now has 48 triples over the last three years…set a Las Vegas franchise record for triples in a season…tied for second in the Pacific Coast League in hits, ranked fifth in total bases (268), eighth in stolen bases and tied for ninth in runs and extra base hits…was also second in caught stealing (11)…led the A's farm system in triples, tied for second in hits, ranked third in stolen bases, extra base hits and total bases, fourth in runs, fifth in RBI, tied for fifth in doubles and home runs, sixth in batting and slugging and seventh in OPS (.834)…was named to the PCL Midseason All-Star team and also played for the American League squad in the Futures Game…was honored with the Mayors Trophy at Las Vegas in voting by fans…batted .338 with 11 triples and a .951 OPS over his first 60 games through June 10…then hit .237 with three triples and a .710 OPS over his final 59 contests…his batting average broke down to .303 (40-for-132) against left-handed pitchers compared to .285 (114-for-400) against right-handers…hit .310 with runners in scoring position, but that dropped to .220 with RISP and two outs…was 9-for-18 (.500) with the bases loaded…11 of his 19 home runs came with runners on base…started 99 games at shortstop and 14 at second base…committed 20 errors at short (.957 fielding percentage) and one at second (.984)…batted .302 as a shortstop, .222 as a second baseman and .231 in six games as the designated hitter… hit .273 with a .316 on-base percentage and 18 stolen bases in 80 games batting leadoff…had a .347 batting average with eight home runs and 27 RBI in 27 games batting third…hit .197 with 10 RBI and 18 walks in 37 games for Toro Del Este in the Dominican Winter League following the season…was rated as the A's number eighth prospect by Baseball America.
LAS VEGAS: Reached base safely in each of his first 23 games, or the entire month of April…hit .352 with a .397 on-base percentage six doubles, six triples, a home run and 16 RBI…collected his first of three four-hit games April 11 against Sacramento to start a season-high 15-game hitting streak that ran through April 27 (26-for-69, .377)…had his first of two two-steal games on April 13 against Fresno…his second also came against the Grizzlies on May 6…drove in a season-high four runs May 2 at Reno to start a 10 game hitting streak from May 2 to 11…went 16-for-48 (.333) with 11 runs scored and 14 RBI during the streak…scored a run in nine consecutive games from May 3 to 11 (11 runs total)…matched his season-high with a 15-game hitting streak from May 24 to June 8 (27-for-72, .375)…batted .315 with six home runs and 25 RBI in 28 games in May…had an extra base hit in seven consecutive games from June 1 to 8 (three doubles, two triples, three home runs)…had his second four-hit game of the season June 10 against San Antonio… hit safely in 10 consecutive games from June 13 to 24 but batted just .269 during the streak…went 1-for-6 with a career-high five strikeouts June 21 against Sacramento…matched his high for strikeouts July 20 at Salt Lake…batted .160 over a 17-game stretch from June 25 to July 20…went 1-for-2 as a defensive replacement for the AL team in the Futures Game on July 7 at Washington…then started at shortstop for the PCL in the Triple-A All-Star Game on July 10 and went 2-for-3 with a triple and two RBI…scored a career-high tying four runs in back-to-back games on July 26 and 27 at El Paso…went 4-for-6 with his lone two-homer game of the season on the 26th and 2-for-2 with a career-high tying four walks on the 27th…the two-homer game was the fourth of his career…was placed on the injured list Aug. 5 with a sprained left ankle…was reinstated Aug. 15 and hit .256 over his final 19 games…went 2-for-14 (.143) with a run, double, walk and stolen base in four postseason games for the Aviators.
2018
Spent the entire season at Nashville in his Triple-A debut and batted .230 with three home runs and 45 RBI in a career-high 131 games…the batting average was a career-low as was his .353 slugging percentage and .280 on-base percentage…had 16 triples, which were the most in the A's farm system and three more than any other player in all of the minor leagues…they matched the most by an A's minor league over the last 19 years (Jermaine Mitchell, 2011)…now has 34 triples over the last two seasons…ranked fifth in the Pacific Coast League with 25 stolen bases, his fourth consecutive season with 20 or more steals…tied for second in the A's farm system in steals…however, was caught stealing 10 times, which tied for the most in the PCL…led the A's farm system in triples and tied for the lead in stolen bases…batted .246 (29-for-118) against left-handed pitchers compared to .224 (79-for-352) with all three of his home runs against righthanders…hit .259 with all three of his home runs at home, .196 on the road…was 6-for-14 (.429) with a double, triple and 15 RBI with the bases loaded…appeared in 123 games at shortstop and four at second base…led PCL shortstops in games, total chances (509), assists (340) and errors (23), ranked second in double plays (72) and third in putouts (146)…did not commit an error in 18 total chances at second…also went 1-for-15 (.067) in five games at designated hitter…hit in every spot in the order except third and fourth…saw his most action with 71 games batting ninth…was rated as the A's ninth best prospect by Baseball America following the season…played for Toros del Este in the Dominican Winter League and hit .169 with six RBI and 10 walks (.300 on-base percentage) in 25 games. MINORS: Was the Sounds Opening Day starter at shortstop on April 5 at New Orleans and went 2-for-5 with a season-high three RBI…also committed a season-high three errors…had his first of three two-steal games April 14 against Omaha (also June 24 against Round Rock and July 17 against Omaha)…was batting .294 over his first eight games but then went 5-for-57 (.088) over his next 15 contests from April 15 to May 2 to drop his average to .165…ended that stretch with his first of two four-hit games May 3 at Colorado Springs…two of the hits were home runs and he drove in a season-high tying three runs…batted .172 in 22 games in April and was hitting under .200 as late as May 20 (.195)…then had his first of four six-game hitting streaks from May 21 to 27 (7-for-20, .350) to lift his average to .213…a 5-for-35 (.143) streak from May 28 to June 10 dropped his average to .201 but he then matched his season-high by hitting safely in six consecutive games from June 11 to 17…went 10-for-22 (.455) with eight RBI during the streak…hit theSpent the entire season at Nashville in his Triple-A debut and batted .230 with three home runs and 45 RBI in a career-high 131 games…the batting average was a career-low as was his .353 slugging percentage and .280 on-base percentage…had 16 triples, which were the most in the A's farm system and three more than any other player in all of the minor leagues…they matched the most by an A's minor league over the last 19 years (Jermaine Mitchell, 2011)…now has 34 triples over the last two seasons…ranked fifth in the Pacific Coast League with 25 stolen bases, his fourth consecutive season with 20 or more steals…tied for second in the A's farm system in steals…however, was caught stealing 10 times, which tied for the most in the PCL…led the A's farm system in triples and tied for the lead in stolen bases…batted .246 (29-for-118) against left-handed pitchers compared to .224 (79-for-352) with all three of his home runs against righthanders…hit .259 with all three of his home runs at home, .196 on the road…was 6-for-14 (.429) with a double, triple and 15 RBI with the bases loaded…appeared in 123 games at shortstop and four at second base…led PCL shortstops in games, total chances (509), assists (340) and errors (23), ranked second in double plays (72) and third in putouts (146)…did not commit an error in 18 total chances at second…also went 1-for-15 (.067) in five games at designated hitter…hit in every spot in the order except third and fourth…saw his most action with 71 games batting ninth…was rated as the A's ninth best prospect by Baseball America following the season…played for Toros del Este in the Dominican Winter League and hit .169 with six RBI and 10 walks (.300 on-base percentage) in 25 games.
MINORS: Was the Sounds Opening Day starter at shortstop on April 5 at New Orleans and went 2-for-5 with a season-high three RBI…also committed a season-high three errors…had his first of three two-steal games April 14 against Omaha (also June 24 against Round Rock and July 17 against Omaha)…was batting .294 over his first eight games but then went 5-for-57 (.088) over his next 15 contests from April 15 to May 2 to drop his average to .165…ended that stretch with his first of two four-hit games May 3 at Colorado Springs…two of the hits were home runs and he drove in a season-high tying three runs…batted .172 in 22 games in April and was hitting under .200 as late as May 20 (.195)…then had his first of four six-game hitting streaks from May 21 to 27 (7-for-20, .350) to lift his average to .213…a 5-for-35 (.143) streak from May 28 to June 10 dropped his average to .201 but he then matched his season-high by hitting safely in six consecutive games from June 11 to 17…went 10-for-22 (.455) with eight RBI during the streak…hit the game-winning two-run home run in the 10th inning of an 8-6 win on June 15 at El Paso…it was his third and final home run of the season…finished the year with a 71-game, 252-at bat homerless streak…went 9-for-22 (.364) with three triples during a six-game hitting streak from June 22-27…hit .271 in June, which was his best single-month average of 2018…was successful in each of his final 12 stolen base attempts beginning July 2…committed his 17th error of the season in his 74th game on July 4 against Iowa…then had a season-best 23-game errorless streak from July 5 to Aug. 1 and made just six errors over his final 52 games…had a season-high tying six-game hitting streak from July 20 to 26…hit .478 (11-for-23) with two doubles and three triples during the streak…went 4-for-5 with two triples and a season-high tying three RBI July 24 at Las Vegas.
2017
Played for three different teams in two different organizations and combined to hit .267 with 30 doubles, 18 triples, 12 home runs and 57 RBI in 129 games…also stole 52 bases…tied for the lead in all of the minor leagues in triples (Franchy Cordero, El Paso) and was one of 11 minor leaguers to reach double figures in doubles, triples, home runs and stolen bases…also tied for second in the minors in stolen bases behind Wes Rogers (70 with Lancaster) and tied for seventh in at bats (532)…grounded into just one double play in 532 at bats…ranked third in the Florida State League in triples (8) and fourth in stolen bases (28) despite spending less than three months with Single-A Tampa…was named to the FSL Midseason All-Star Team…tied for the Texas League lead in triples (7) despite spending just one month with Double-A Midland…combined to hit .296 with 14 doubles, 10 triples, eight home runs, 46 RBI and 24 stolen bases in 60 games with his two Double-A teams (Trenton and Midland) and was named a Baseball America Double-A All-Star… had career highs in slugging percentage (.459), runs (90), hits (142), doubles, triples, home runs, RBI , extra base hits (60), games, at bats and strikeouts (144)…batted .338 (47-for-139) against left-handed pitching compared to .242 (95-for-393) against right-handers…had a .189 batting average with runners in scoring position with Tampa but hit .333 with RISP with Trenton and .394 with Midland for a mark of .284 overall…hit .329 in 16 day games and was successful in all 13 of his stolen bases attempts…had a .258 batting average at night…batted .239 with a .300 on-base percentage when leading off an inning…appeared in 89 games at shortstop, including all 30 of his games with Midland…committed 19 errors for a .952 fielding percentage…also appeared in 29 games in center field (one error) and eight games at second base (two errors)…batted leadoff 124 times and hit third three times (all with Tampa)…played for Toros del Este in the Dominican Winter League following the season and hit .217 with three doubles, two triples, three home runs and eight RBI in 30 games…was a perfect 10-for-10 in stolen bases…was named the A's number three prospect by Baseball America following the season.
MINORS: Had his first of nine multi-steal games when he stole two bases April 8 at Lakeland…had his first of four four-hit games the next day against the Flying Tigers (also May 12 at Clearwater, July 1 at New Hampshire and Sept. 1 against San Antonio)…grounded into his only double play of the season in the second game of an April 13 doubleheader against Bradenton…finished the season with a 121-game streak without a GIDP…was hitting .333 over his first 10 games through April 15 but then went 13-for-83 (.157) over his next 21 contests to fall to .213…stole 13 bases in April, which tied for the most in all of the minor leagues…batted .393 (22-for-56) over a 14-game stretch from May 10 to 25…collected his first of two two-homer games May 12 at Clearwater… laced two triples in the second game of a May 25 doubleheader at Jupiter…started at shortstop and batted leadoff for the North All-Stars in the Florida State League All-Star Game on June 17 at Lakeland and went 0-for-2…stole a season-high four bases in his final game with Tampa on June 25 against Dunedin…was leading the FSL in triples (8) and stolen bases (28) and was batting .240 in 69 games when he was promoted to Double-A Trenton June 27…batted .300 in 30 games with the Thunder from June 27 through June 30…tied for first in the Eastern League in triples over that span (3), ranked second in stolen bases (11) and runs (26), tied for third in extra base hits (16), fourth in total bases (63), tied for fourth in doubles (9) and fifth in RBI (26)…went 6-for-8 (.750) with two doubles, a triple, two grand slams and 16 RBI with the bases loaded with Trenton…was named EL Batter of the Week in his first week at Double-A (June 26-July 2) after going 12-for-23 (.522) with nine runs, three triples, a home run, 10 RBI, five walks and two stolen bases in six games…reached base safely in each of his first 23 games with the Thunder through July 23…hit .344 with a .425 on-base percentage…reached base safely in each of his final eight games with Tampa for a 31-game reaching base streak overall…walked a season-high four times and had a strikeout in five plate appearances June 28 against Richmond…had a season-best 10-game hitting streak from June 29 to July 8…went 18-for-40 (.450) with 15 runs, four doubles, three triples, two home runs and 15 RBI during the streak…drove in four runs July 1 at New Hampshire and then had a grand slam and a season-high five RBI the next day against the Fisher Cats…tripled in three straight games, July 1-2…stole a base in five consecutive games from July 9 to 16 (six stolen bases total)…including the 200th steal of his minor league career July 14 at Hartford…hit his second grand slam July 26 against Hartford…went 0-for-5 with a season-high four strikeouts July 27 at Altoona (also struck out four times Aug. 23 at Corpus Christi)…was traded to the A's with Dustin Fowler and James Kaprielian for Sonny Gray and international bonus money July 31 and was assigned to Midland…went on to bat .292 in 30 games with the RockHounds…hit .354 with six of his seven triples in 17 home games, .207 in 13 road games…joined the club on Aug. 1 and from that point until the end of the season, he led the Texas League in runs (25), triples (7), stolen bases (13), extra base hits (16) and total bases (71) and ranked fourth in hits (40)…had a 15-game home hitting streak with the RockHounds from Aug. 3 to 30 (24-for-70, .343)…batted .218 over his first 12 games with Midland through Aug. 13 but then hit .341 over his final 18 contests… logged his second two-triple game of the season Aug. 29 against San Antonio…went 4-for-5 and scored a season-high four runs Sept. 1 against San Antonio…had his second two-homer game in the final game of the regular season on Sept. 4 at Frisco…went 8-for-43 (.186) with seven runs scored, four RBI, three walks and three stolen bases in 10 postseason games for the Texas League Champion RockHounds.
2016
Spent the entire season with Single-A Tampa, hitting .254 (118-for-464) with 65R, 16 doubles, 9 triples, 8HR, 47RBI and 36SB in 113 games as the team's primary leadoff hitter…led all Yankees minor leaguers in stolen bases…led the Florida State League in stolen bases and tied for second in triples, while leading the team in hits and RBI…was selected to the FSL Mid-Season All-Star Team and the 2016 MLB All-Star Futures Game (did not participate). Hit .351 (33-for-94) with 6 doubles, 4 triples, 3HR and 40RBI with runners in scoring position. Batted .337 (28-for-83) with 18R, 3 doubles, 3 triples, 2HR and 17RBI in 21 games in April. Attended his first spring training as a non-roster invitee, batting .235 (4-for-17) with 3R, 1 triple, 1HR, 3RBI and 1SB in 10 games. After the season, played for the Toros del Este of the Dominican Winter League, batting .167 (7-for-42) with 8R, 1 double, 1 triple, 2RBI and 5SB in 20 games. Following the season, was tabbed by Baseball America as the Yankees' No. 4 prospect, as well as the organization's "Fastest Baserunner" and "Best Athlete"…was also named by the publication as the Florida State League's "Fastest Baserunner" and "Best Infield Arm"…was named an Organization All-Star by MiLB.com. Was added to the Yankees' 40-man roster on 11/18/16.
2015
Combined with Single-A Charleston and Single-A Tampa to hit .278 with 23 doubles, 11 triples, two home runs, 40 RBI and 82 stolen bases in 117 games…ranked second in the organization in triples…led all minor leaguers in stolen bases…was 82-for-99 (82.8%) in stolen base attempts, finishing 11 stolen bases ahead of minor league runner-up Yefri Pérez (71)…had 18 multi-steal games, including four games with four stolen bases, six with three and eight with two…began the season with Charleston, batting .268 with a league-high 71 stolen bases in 96 games…was promoted to Tampa on Aug. 5 and went 4-for-6 with two steals in his Tampa debut that day at Brevard County…was named Florida State League "Player of the Week" for the period from Aug. 10-16 after hitting .435 with four runs, three doubles, one triple, four RBI and three stolen bases in five games…had five straight multi-hit games from Aug. 8 to 13…following the season, was ranked by Baseball America as the Yankees' No. 1 prospect, as well as the organization's "Fastest Baserunner," "Best Athlete" and "Best Defensive Infielder" and possessing the "Best Infield Arm"…was also tabbed by the publication as the No. 2 prospect in the South Atlantic League…according to Baseball America's 2015 Best Tools survey of league managers, was the "Best Baserunner" and "Most Exciting Player" and had the "Best Infield Arm" in the South Atlantic League
2014
In 15 games with the Gulf Coast League Yankees 1, batted .276 with 14 runs, five doubles, a triple and RBI…had a .354 on-base percentage and .397 slugging percentage…was 11-for-12 (91.7%) in stolen base attempts…made 12 starts at shortstop and committed one error in 59 total chances (.983 fielding percentage)…following the season, was ranked by Baseball America as the Yankees' No. 3 prospect.
2013
Spent the season with the Dominican Summer League Yankees 1, hitting .287 with 50 runs, nine doubles, six triples, seven home runs and 26 RBI in 64 games…had a .378 on-base percentage and .450 slugging percentage…stole a DSL-high 49 bases in 59 attempts (83.1%)… recorded multiple steals 11 times and four steals twice…batted .430 (34-for-79) during an 18- game hitting streak from July 8-30…hit for the cycle July 12 at the DSL Nationals (4-for-6, 4RBI)
2012
Made his professional debut with the Dominican Summer League Yankees 2, batting .255 with 15 runs, two doubles, one triple, home run, eight RBI and 12 walks in 14 games…had a .382 on-base percentage and .382 slugging percentage.
