Andrew Jacob Puk was originally signed by A's scout Trevor Schaffer…graduated from Washington High School…attended the University of Florida where he compiled a 16-9 record, a 3.39 ERA and .203 opponents batting average in 54 games (37 starts) over three seasons…struck out 251 batters in 194.0 innings…was a three-time SEC Academic Honor Roll selection…played for the USA Baseball Collegiate National Team in 2015.
Began the season on the minor league injured list as he continued his recovery from April 10, 2018 ulnar collateral ligament surgery... started his come back at Single-A Stockton on June 11 and made three appearances with the Ports, six at Double-A Midland and nine in his Triple-A debut at Las Vegas before he was selected by Oakland on Aug. 20…went 2-0 with a 3.18 ERA in 10 relief appearances in his Major League debut…struck out 13 batters in 11.1 innings (10.32 per nine innings)…walked five for a .319 on-base percentage but yielded just one double and one home run for a .333 slugging percentage…allowed a .238 opponents batting average, which broke down to .172 (5-for-29) against right-handed hitters compared to .385 (5-for-13) against left-handers…surrendered his only home run and issued four of his five walks to righties…opponents hit .200 with the bases empty, .294 with runners on…did not allow a run in four games (5. ip) on the road…had a 5.68 ERA in six games in Oakland…allowed 1-of-3 (33.3%) inherited runners to score…first batters faced were 2-for-8 (.250) with two walks…tossed two innings or fewer in each of his 10 appearances…made his ML debut on Aug. 21 against New York (0.1 ip, 1 h, 1 bb, 0 so)…did not record his first strikeout until his third outing on Aug. 26 at Kansas City…fanned Nicky Lopez to lead off the bottom of the seventh…was credited with his first ML win Sept. 5 against Los Angeles (AL)…entered the game to start the sixth inning with the A's trailing 5-1 and allowed a run on one hit in 2.0 innings…Oakland then scored seven times in the seventh to win 10-6…it was his first of four outings of 2.0 innings…did not allow a run in four straight appearances from Sept. 7 to 17 (5.0 ip)…struck out a season-high three batters in his final game on Sept. 27 at Seattle (1.0 ip, 1 h)…was on the A's roster for the American League Wild Card Game but did not pitch…was rated as the A's number two prospect by Baseball America following the season.
MINORS: Combined for a 4-1 record, a 4.97 ERA and .226 opponents batting average in 18 games, including four starts, with Stockton, Midland and Las Vegas…struck out 38 batters in 25.1 innings, an average of 13.50 per nine innings…walked 10 (3.55 per nine innings) and surrendered seven home runs (2.49 per nine innings)…tossed two innings or fewer in all 18 of his appearances and allowed one run or more 11 times…his opponents batting average broke down to .222 (6-for-27) with three home runs against left-handed hitters compared to .227 (15-for-66) with four home runs against right-handers…allowed a .276 batting average and all seven of his home runs with the base empty, .143 with runners on…yielded a .263 batting average with runners in scoring position…made his first start for Stockton on June 11 against San Jose (2.0 ip, 1 h, 1 r, 1 er, 1 bb, 4 so)…it was his first of seven outings of 2.0 innings and his first of four four-strikeout games (June 28 at Frisco, July 11 vs. Corpus Christi, July 16 at Arkansas)…had season highs in runs (3), hits (3), walks (2) and pitches (47) against San Jose on June 21…also surrendered three runs on July 30 against New Orleans and yielded three hits on June 28 at Frisco…was 0-0 with a 6.00 ERA in three starts for Stockton when he was moved up to Midland on June 28…tossed at least one inning in each of his six outings with the RockHounds, including his lone start on July 16 at Arkansas when he tossed 2.0 scoreless innings and struck out a season-high four…logged a 4.32 ERA in six games with Midland and was moved up to Las Vegas on July 23…went 4-1 with a 4.91 ERA in nine relief appearances with the Aviators…did not allow a run in each of his first two outings on July 23 against El Paso (2.0 ip) and July 26 at El Paso (1.0 ip) and was credited with the win in each outing…made his final minor league appearance on Aug. 17 with a scoreless inning of relief against Albuquerque (2 so).
Missed the entire 2018 season after undergoing "Tommy John" surgery…was a non-roster invitee to Major League Spring Training and went 1-1 with a 3.38 ERA in four games, including three starts, before he was reassigned to minor league camp March 18…had surgery to repair the ulnar collateral ligament in his left arm April 10…the surgery was performed by Dr. Neal ElAttrache in Los Angeles, Calif…was rated as the A's No. 2 prospect by Baseball America following the season.
Split his first full professional season between SingleA Stockton and Double-A Midland…combined for a 6-10 record and a 4.03 ERA in 27 games, including 24 starts…struck out 184 batters in 125.0 innings, an average of 13.24 per nine innings…ranked third in all of the minors in strikeouts behind Alec Hansen (191) and Triston McKenzie (186)…the strikeouts led the A's farm system and tied for the sixth best total by a minor leaguer in Oakland history…also ranked eighth in the A's farm system in ERA and innings pitched…was named the A's Organization Pitcher of the Year…walked 48 for a strikeout-to-walk ratio of 3.83…surrendered just three home runs, an average of 0.22 per nine innings…was named to the California League Midseason All-Star Team but did not pitch in the June 20 game following a June 15 promotion to Midland…represented the United States in the All-Star Futures Game…allowed a .227 opponents batting average, which included .227 (80-for-352) against right-handed hitters compared to .228 (28-for-123) against left-handers… allowed just three extra base hits to lefties for a .269 slugging percentage (.332 vs. righties)… opponents hit .248 with runners in scoring position…posted a 2.92 ERA over innings one through five, had a 9.30 ERA from the sixth inning on…made all three of his relief appearances over his first six games with Stockton and was 0-2 with an 8.10 ERA in those games…combined with both clubs to go 6-8 with a 3.68 ERA in his 24 starts…his teams were 10-14 (.417) in his starting assignments…tossed more than five innings in just 10 of his 24 starts…had more strikeouts than innings pitched in 22 of his 27 contests…was named the A's number one prospect by Baseball America following the season.
STOCKTON: Began the season at Stockton and went 4-5 with a 3.69 ERA and .196 opponents batting average in 14 games, including 11 starts with the Ports…surrendered just one home run in 61.1 innings…struck out 98 (14.38 per nine innings)…yielded a .175 average to batters leading off an inning…did not allow an earned run in two of his first three appearances (1 er in 12.0 ip, 0.75 ERA)…then allowed a season-high five runs on five hits in 3.0 innings of relief April 23 against San Jose for his first decision of the season, a loss…took the loss in three consecutive appearances from April 23 to May 1 (11.88 ERA)…then picked up his first win in a start on May 6 against San Jose…tossed 5.0 scoreless innings, allowed one hit and did not walk a batter while striking out nine in a 13-2 win…that began a six-start through June 3 when he went 4-1 with a 2.32 ERA…was named California League Pitcher of the Week for the week of May 22-28…won each of his two starts that week on May 22 against Lake Elsinore and May 27 at Rancho Cucamonga…allowed just one run (0.87 ERA) and one hit (.029 opponents batting average) while striking out 15 in 10.2 innings…however, walked a season-high four batters in each start…struck out 12 batters in 6.2 innings June 3 against Lancaster, his first of four 10-strikeout games…fanned 11 in 6.2 innings in his final Single-A start June 14 against Visalia…was leading the league in strikeouts (98), ranked second in opponents batting average (.196) and 10th in ERA (3.69) when he was promoted to Midland June 15.
MIDLAND: Went 2-5 with a 4.36 ERA in 13 starts with the RockHounds…struck out 86 batters, which was the second best figure in the Texas League from the time he joined the club (June 15) through the end of the season…was 2-2 with a 2.51 ERA in eight starts at home, 0-3 with a 9.35 ERA in five starts on the road…tossed a season-high 7.0 innings in his first Double-A start on June 19 at Frisco but was the losing pitcher in Midland's 3-1 loss…then tossed a season low 0.1 innings in his next start June 24 at San Antonio (3 h, 4 r, 4 er, 3 bb, 1 so)…walked a seasonhigh tying four batters July 2 against Tulsa…pitched for Team USA in the All-Star Futures Game July 9 at Miami and recorded the final two outs of a 7-6 win (0.2 ip, 2 h, 2 r, 1 er, 1 bb)…allowed a season-high tying five runs in 1.0 innings July 18 at San Antonio…was 0-3 with a 6.98 ERA over his first five starts at Midland…then allowed one run in 5.0 innings in the second game of a July 23 doubleheader against Corpus Christi for his first Double-A win and went 2-2 with a 3.22 ERA over his final eight starts with the RockHounds…struck out a season-high 13 batters and walked just one in 6.2 innings against San Antonio Aug. 3…allowed a season-high eight hits in 5.1 innings against Northwest Arkansas Aug. 15…matched his season-high with 13 strikeouts and did not walk a batter in 6.0 innings in his final regular season start on Aug. 31 against San Antonio…allowed two unearned runs but took the loss in a 5-0 decision…tossed a season-high 109 pitches… went 1-2 with a 3.03 ERA in six starts in August…struck out 53 batters in 35.2 innings and led all of the minor leagues in strikeouts in August…made one postseason start for the TL Champion RockHounds and had a no decision in Midland's 9-2 win over San Antonio in Game 1 of the Semifinals (4.0 ip, 2 h, 4 so).
Was the A's first round selection in the 2016 draft and was assigned to Vermont of the Short Season Single-A New York-Penn League after signing on June 30…went 0-4 with a 3.03 ERA in 10 starts with the Lake Monsters…did not allow an earned run in five of his six no decisions (0.98 ERA)…did not allow a run in three of those games, but tossed fewer than five innings in all but one start…struck out 40 batters in 32.2 innings (11.02 strikeouts per nine innings) and did not allow a home run…held the opposition to a .185 batting average, including .157 (14-for-89) against right-handed hitters compared to .257 (9-for-35) against left-handers…opponents were 3-for-32 (.094) with four walks (.194 on-base percentage) when leading off an inning…yielded a .353 average with runners in scoring position and two outs…combined for a 1.40 ERA in the first and second inning…had a 5.40 ERA from the third inning on…made his professional debut July 12 at Auburn and tossed 2.0 scoreless innings…the first batter he faced reached on an error but he retired each of the final five batters he faced…did not record his first strikeout until his third start on July 22 against Hudson Valley…allowed a season-high four runs in 2.2 innings for his first loss July 28 against Brooklyn…struck out 15 of the 30 batters he faced over a two start stretch from Aug. 8 to 14 (7.2 ip)…including a season-high eight strikeouts in 3.2 scoreless innings Aug. 14 against Tri-City…then tossed a season-high 5.0 scoreless innings in his next start Aug. 26 at Aberdeen but had a no decision in a 3-1 loss…yielded just two hits and did not walk a batter…walked a season-high five batters and yielded a season-high tying four runs for the loss in his next start Aug. 26 at Connecticut…was rated as the A's number two prospect by Baseball America following the season.