Is nicknamed "Sugar"...Received the moniker when his high school travel team watched the baseball movie "Sugar" and decided that Díaz resembled the Dominican title character...Aided with relief following a string of earthquakes in Puerto Rico in early 2020, shopping for supplies and driving two hours across the island with members of his extended family to Peñuelas to distribute water, paper towels, toiletries and first aid kits...Also helped with relief efforts in Puerto Rico after the 2017 season following Hurricane Maria, which struck the island in September 2017...After the 2019 season, he sent videos of his bullpen sessions to Hall of Famer Pedro Martínez...Martínez offered advice about his mechanics via FaceTime...Keeps an entire bucket of bubble gum in his locker.
Had 50 strikeouts in 25.2 innings...Was third among major-league relievers in strikeouts...Averaged a career-best 17.53 strikeouts per nine innings, which was third among relievers (min. 15.0 innings)...Was second among major league relievers with a 1.75 ERA and 11th with a .191 batting average against (min. 25.0 innings)...Tossed 11.0 consecutive scoreless innings from Aug. 31-Sept. 22 and allowed one earned run over his final 12.2 innings (0.71 ERA)...After allowing two earned runs in his first three appearances (2.1 innings), yielded just three earned runs for the rest of the season (23.1 innings), good for a 1.16 ERA from Aug. 2 through the end of the season...Had at least one strikeout in 24 of his 26 appearances and two or more strikeouts in 16 of those outings...Struck out 50 of the 110 batters he faced (Mets-record 45.5 percent strikeout rate, min. 25.0 innings).
Posted the best K/9 ratio of his career (15.4), striking out 99 batters in 58.0 innings...Recorded each out in an outing via strikeout 18 times...Notched his first save as a Met in his team debut on Opening Day at Nationals Park, preserving a 2-0 Mets' victory with a strikeout...His final strikeout of the season was his 400th of his career...Had the ninth-most saves in the National League (26).
Was named the Mariano Rivera AL Reliever of the Year and earned AL All-Star honors for the first time in his career...Finished eighth in the AL Cy Young Award balloting...Also received five votes for the AL MVP Award and finished 18th...Was a four-time AL Reliever of the Month honoree, taking the award in April, June, July and August...Was the first non-rookie to win at least four monthly awards in a season since Pedro Martinez earned four AL Pitcher of the Month honors in 1999...Went 57-61 (93.4 percent) in save opportunities, while posting a record of 0-4 with a 1.96 ERA (16 earned runs/73.1 innings) with 124 strikeouts and 17 walks in 73 relief appearances with the Mariners... Successfully converted 28 consecutive save opportunities from June 2-August 15…Was the longest streak in the majors in 2018...Led the majors with 57 saves, tied for the second-highest single-season total in MLB history...Only Francisco Rodríguez (62 in 2008) has had more in a season...Ranked second among all relievers with 124 strikeouts…Among AL relievers, ranked first in WHIP (0.79), second in opponents OBP (.229), third in K/9.0 IP (15.22), third in ERA (1.96), fourth in opponents slugging percentage (.241) and fifth in opponents average (.160, 41-257)...His 3.5 Fangraphs WAR was the seventh-highest by a reliever since the 2000 season...The Mariners went 66-0 when he entered the game with a lead…went 61-0 in his save opportunities…went 30-0 when he entered with a one-run lead...Díaz was 27-30 in one-run save opportunities with a 0.89 ERA (three earned runs/30.1 innings) with 55 strikeouts and 5 walks... According to STATS, his 27 one-run saves were a single-season MLB record...Led AL relievers and ranked second among all relievers with 124 strikeouts...Struck out 44.3 percent (124 strikeouts/280 BF) of batters he faced in 2018, the second-best mark among all relievers behind Milwaukee's Josh Hader (46.8 percent - 140 SO/299 BF), the third-best mark by a reliever in AL history and seventh-best by a reliever in major league history…Fanned his first batter faced in 34 of 73 (46.6 percent) appearances in 2018, the top mark among all relievers...Went 5-5 in save opportunities with a 1-0 lead... In those five outings, he threw five 1-2-3 ninth innings, striking out 14 of the 15 batters he faced… his 5 saves in 1-0 wins are tied with 4 others for the most in single-season history since the save became an official stat in 1969 (also: Troy Percival-LAA, 2002, Heath Bell-SD, 2010, Carlos Marmol-CHC, 2010, and Trevor Rosenthal-STL, 2014)...Whiffed eight consecutive hitters on two occasions, July 3-11 over four games and September 1-5 over three games...Is the second pitcher in MLB history to compile at least 50 saves and 100 strikeouts in the same season...Eric Gagne, who did so in consecutive years (2002-2003), is the only other pitcher to do so...With 124 strikeouts and 17 walks, became only the 18th reliever in Major League history with a season with at least 100 more strikeouts than walks...Josh Hader (143 strikeouts, 30 walks) also accomplished this feat in 2018...Retired all three batters faced in 33 of 69 (48 percent) appearances of exactly 1.0 inning...Was the winning pitcher in the 2018 All-Star Game...Recorded his 50th save of the season on August 25 at Arizona…Came in the Mariners' 130th game of the season, becoming the secondfastest pitcher to reach the milestone (Francisco Rodriguez, 129 games, 2008)...Recorded his 300th career strikeout on September 29 vs. Texas...Became the fifth reliever in MLB history with at least 300 strikeouts over his first three major league seasons.
Totals - Was 4-6 with 34 saves and a 3.27 ERA (24 ER, 66.0 IP) with 89 strikeouts in 66 relief games... Save It - His 34 saves were T4th in American League behind Tampa Bay's Alex Colome (47), Toronto's Roberto Osuna (39) and Boston's Craig Kimbrel (35)... Yer Out - Struck out 12.14 batters per 9.0 innings, the 4th-best by a reliever in club history... Finishing Strong - Was 2-1 with 7 saves and 1.38 ERA (2 ER, 13.0 IP) with 17 strikeouts in final 13 games of year…had 2.83 ERA (11 ER, 35.0 IP) with 48 strikeouts from July on... Road Warrior - Was 25-for-27 in save opportunities with a 1.24 ERA (5 ER, 36.1 IP) with 54 strikeouts in 35 road games…had a 5.76 ERA (19 ER, 29.2 IP) in 31 home games... Reliever of the Month - Named American League Reliever of the Month for July, going 0-1 with 8 saves and a 1.98 ERA (3 ER, 13.2 IP) with 21 strikeouts in 13 relief appearances…limited opponents to a .163 (8x49) batting average... No Hits For You - Limited opponents to a .183 (44x240) batting average, the 13th-best among American League relievers... Thirty - Recorded his 30th save of the season on Aug. 25 at New York-AL, becoming the 9th Mariners pitcher (14th overall) with a 30-save season... 4-for-4 - Had saves in 4 consecutive games, July 14-17…first Mariner in club history to do so…last pitcher with 4 saves in as many games: Jeremy Jeffress-MIL, 7/28-31/16... Winner Winner - Earned his first Major League win on April 16 vs. Texas... Strong Run - From May 19-June 20, posted 0.68 ERA (1 ER, 13.1 IP) in 12 games
The Totals - Went 0-4 with 18 saves (in 21 opportunities) with a 2.79 ERA (16 ER, 51.2 IP) with 88 strikeouts in 49 relief appearances...Closing Time - Was 0-2 with 18 saves (in 21 chances) with 3.71 ERA (11 ER, 26.2 IP) with 39 strikeouts after move to closer role Aug. 1...Save It - Went 0-1 with 18 saves with a 4.22 ERA (10 ER, 21.1 IP) with 33 strikeouts in 21 games when entering in a save situation...Leading the Way - His 18 saves from Aug. 1 through the end of the regular season led MLB, ahead of Mark Melancon-WAS (17), Sam Dyson-TEX (16) & Kenley Jansen-LAD (16)...Strikeout Record - His 15.33 strikeout per 9.0 inning rate is the best in club history (min. 50.0 IP), ahead of Danny Farquhar (12.77 in 2013)...The Setup - Went 0-2 with 13 holds and a 1.80 ERA (5 ER, 25.0 IP) with 49 strikeouts in 24 games before moving to closer role (through July 31)...Close the Door - Converted first 11 save opps (8/2-26), and 7 of last 10 to end season..Punch-Outs - Recorded 88 strikeouts, 3rd-most in club history by a Mariners rookie reliever behind Enrique Romo (92) and Carson Smith (92), and T8th-most in club history by a reliever (also: Jeff Nelson, 88 K, 2001)...First Save - Earned his first ML save and struck out 3 on Aug. 2 vs. Boston (1.0 IP, BB, 3 K)...That's A Record - Recorded his 50th career strikeout in 25.1 IP, the fastest of any pitcher to make his Major League debut since 1893 (Elias Sports Bureau)...High Rates - Struck out 15.33 batters per 9.0 innings, the 2nd-best rate among relievers behind New York's Dellin Betances (15.53) and 8th-best in MLB history…ranks 2nd-best by a rookie reliever in MLB history, trailing Kenley Jansen-LAD (16.10/96 K, 53.2 IP, 2011)...Yer Out - Struck out 2+ batters in 29 of 49 outings and had at least one in 42 of 49 games...Mowing 'Em Down - Recorded 11 straight outs via strikeout June 28-July 6, setting a club record (previous: 10, Randy Johnson, July 18-24, 1997)...Distance - Season-bests with 5 strikeouts and 2.2 shutout frames June 14 at Tampa Bay...Call-Up - Selected from AA Jackson June 4…MLB debut June 6 vs. Cleveland (1.0 ShO IP, 1 K)...With Jackson - Went 3-3 with 1 save and a 2.21 ERA (10 ER, 40.2 IP) with 54 strikeouts in 16 games including 6 starts with AA Jackson...Minor Pen - After move to bullpen May 10, was 1-0 with 1 save and 0.00 ERA (0 ER, 11.2 IP), striking out 16...Starters - Began season in rotation, was 2-3 with 3.00 ERA (10 ER, 30.0 IP) with 38 in 6 starts.
Split season between High-A Bakersfield (4/9-5/12) and AA Jackson (5/13-end of season), going 7-10 with 3.82 ERA (60 ER, 141.1 IP) in 27 starts…member of World Team in 2015 MLB Futures Game (0.2,3,2,2,0,1)…named by Seattle Mariners as the organization's Starting Pitcher of the Year…led Mariners farmhands with 145 strikeouts… among all minor league players ranked 9th in strikeouts per 9.0 innings (9.23) and T13th in strikeouts (145)…went 2-0 with a 1.70 ERA (7 ER, 37.0 IP) in 7 starts with Bakersfield (April 9-May 12)…at the time of promotion to AA on May 13, ranked among the California League pitching leaders in opponent batting average (1st, .167), WHIP (1st, 0.81), ERA (3rd, 1.70), strikeouts (5th, 42) and innings (10th, 37.0)...the Mariners #2 prospect by Baseball America heading into 2016 season.
Spent season with Clinton and named by Mariners as Starting Pitcher of the Year… allowed 2 earned runs or less in 17 games, including not allowing a run in 6 starts.
Made 13 starts with Pulaski…Appalachian League Pitcher of the Year…ranked among league leaders in ERA (1st, 1.43), strikeouts (1st, 79), starts (T1st, 13), innings (2nd, 69.0), WHIP (1st, 0.91) and opponents average (2nd, .191) and among starters in strikeouts per 9.0 innings (3rd, 10.30) and fewest baserunners per 9.0 innings (1st, 8.74)…Appalachian League Pitcher of the Week, June 24-30…participated in Mariners Instructional League.
Began pro career with AZL Mariners…participated in Mariners Instructional League.