Fulfilled a life-long dream of playing his first season in the Dominican Winter League during the 2023-24 season...Went a combined 1-0 with a 4.26 ERA (three ER in 6.1 IP) in eight games with Águilas and Gigantes...At the time of his addition to the D-backs' 40-man roster in November 2022, was the youngest player (DOB 7/30/2001)…is now the third-youngest pitcher behind Cristian Mena (12/21/02) and Joe Elbis (9/24/02) heading in the 2025 season...Pitched for Salt River in the 2022 Fall League and was selected to the "Fall Stars Game" with D-backs' infielder Jordan Lawlar after posting a 2.35 ERA (two ER in 7.2 IP) and 13 strikeouts...A member of the 2020 graduate class from the D-backs' academic program, which has helped more than 110 Minor Leaguers in the organization’s Dominican Republic academy to achieve their high school equivalency diploma since 2013...Served as the celebrity coach in the D-backs' Baseball Camp in July 2024 at Chase Field for kids ages 7-12...Kids received a Martinez t-shirt and autographed poster, took a photo with him, participated in drills and instructional stations and finished the day with lunch...Has visited Phoenix Children's over the last two seasons, beginning in August 2024, along with fellow pitchers Eduardo Rodriguez and Ryan Thompson.
2025
Limited to 17 appearances in his third season with Arizona, going 1-2 with five saves, a 4.11 ERA (seven ER in 15.1 IP), opponent .135 AVG (7-for-52)/.559 OPS and 22 strikeouts...Made his final appearance of the season on June 9 vs. Mariners before undergoing season-ending Tommy John surgery...On March 22, agreed to a five-year extension (2025- 29) [club option for 2030-31, conditional option for 2032]...Made his first Opening Day roster...His 99.5 MPH AVG fastball velocity ranked 10th in the NL...Threw five of the 18 fastest pitches in the NL as of June 15 (fifth, 102.4; 12th/13th, 102.2 (2x); 14th, 102.1; 18th, 102.0)...His five pitches at 102.0+ MPH prior to being on the injured list (thru June 15) were tied for second most with Ryan Helsley (STL-NYM), behind Seth Halvorsen/COL (six)...Recorded consecutive saves in back-to-back appearances twice: June 1 vs. Nationals, June 4 at Braves; April 4 at Nationals, April 8 vs. Orioles)...Opponents went hitless (24 PA) off his splitter (31.0% usage) with 14 strikeouts and a 58.6% whiff rate...limited hitters to a .190 AVG (4-for-21) off his sinker (40.7% usage)...Was scoreless in a season-high nine straight games (eight IP) from March 29-April 23, going 1-0 with two saves, one walk and 11 strikeouts...Did not allow an earned run in his first 10 games from March 29-April 26, going 1-1 with two saves, a 0.56 WHIP, opponent .100 AVG (3-for-30)/.282 OPS, two walks and 11 strikeouts...Did not allow an earned run in his first six home games (5.2 IP) from March 29-April 26, going 1-1 with one save, a 0.53 WHIP, opponent .105 AVG (2- for-19)/.296 OPS, one walk and six strikeouts...Did not allow a hit in a career-high six straight games (5.1 IP) from April 8-April 26, going 0-1 with one R, zero ER, two walks and five strikeouts...With men on base from March 29-June 9, held opponents to a .174 AVG (4-for-23)/.648 OPS with seven walks and eight strikeouts in 17 games...Had two stints on the injured list: May 1-22 (right shoulder inflammation) and June 10-end of season (sprained right ulnar collateral ligament)...Made one rehab appearance (one IP) with Triple-A Reno on May 20.
2024
Named the D-backs' Rookie of the Year by the Arizona Chapter of the BBWAA after going 5-6 with eight saves, a 2.48 ERA (20 ER in 72.2 IP) and 91 strikeouts over 64 games in his second season with the D-backs...Ranked among NL relievers in HR/9.0 IP (fourth, 0.25), IP (fifth) and strikeouts (fifth) [min. 50 G]...Ranked among rookie relievers [min. 40 G] in strikeouts (third), saves (third), games (T-3rd), innings, (fourth), ERA (fifth) and wins (T-fifth)...His 10.7 barrel pct. [Exit Vel. 95 MPH+ with LA between 10-35 deg.] finished as the eighth lowest among relievers [min. 50 G]...Since Aug. 5, his 8 saves tied for seventh most in the NL (also: Porter Hodge/CHC and Kyle Finnegan/WSH)...Held lefties and righties to a .221 AVG…LHH went 23-for-104/.652 OPS with 39 strikeouts and RHH were 36-for-163/.571 OPS with 52 strikeouts...Held opponents with runners in scoring position to a .228 AVG (18-for-79)/.617 OPS with 16 walks, 31 strikeouts and only 1 extra-base hit (3B)...Hitters went 0-for-6 with bases loaded with 0 walks and four strikeouts...Did not give up a homer over his first 25 games (30.2 IP, 126 BF)…allowed just one homer over his final 38 games and his 0.22 HR/9.0 IP was the fifth lowest among relievers [min. 30 G] since July 4...Gave up one homer to righties (181 BF) and 1 to lefties (127 BF)...Led D-backs relievers in strikeouts for May (16), June (13) and August (24)...In 36 total one-inning appearances, faced the minimum 17 times...Opponents batted .098 (8-for-82) off his split finger (21.8% usage) with 58 strikeouts and a 54.0% whiff…off his slider (21.6% usage), opponents hit .178 (8-for-45) with a 45.1% whiff...Was scoreless in 19 of his first 20 games, going 2-0 with a 0.36 ERA (1 ER in 25 IP), opponent .147 AVG (15-for-86)/.476 OPS, 28 strikeouts and just one extra-base hit (2B)...During his 15 straight scoreless outings, boasted an opponent .209 AVG (14-for-67)/.517 OPS, eight walks and 23 strikeouts...Did not allow a hit until his fifth appearance...Allowed just 1 XBH (2B) in his first 25 games (30.2 IP, 126 BF). Was one of six relievers in the Majors in May with a 0.00 ERA [min. 10 games]…in 10 games (12.2 IP) went 1-0 with an opponent .239 AVG (11-for- 46)/.588 OPS, six walks and 16 strikeouts...Recorded his first career win on May 13 vs. Reds (W; 0 ER in 1.0 IP, 2 K)...Recorded his first career three-inning outing on May 30 @ Mets (0 ER in 3.0 IP, 2 K)…tossed his second three-inning game on July 4 @ Dodgers and recorded the win (W; 0 ER in 3.0 IP, 5 K)...Led D-back relievers in June in games (14), innings (15.2) and OPS (.525) [min. 10 games]...Led D-backs relievers in July with 14 appearances and was tied for second most in the NL (also: Robert Garcia/WSH) …his 17 strikeouts ranked tied for sixth among NL relievers...Recorded his second career save on Aug. 5 @ Guardians, his first since Aug. 17, 2023 @ Padres...Ranked among NL relievers in Aug. in strikeouts (second, 24), games (T-2nd, 14) and saves (third, 7)...GIVE 'EM THE HEATER: His 100.3 MPH AVG fastball in 2024 ranked first among NL relievers and third in MLB, behind Mason Miller/OAK (100.9) and Jhoan Duran/MIN (100.5) [min. 50 G]...Tossed 413 pitches of 100.0+ MPH in 2024 to lead the NL and rank second in MLB, behind Miller (503) and ahead of Emmanuel Clase/CLE (272)...His 100.3 MPH AVG fastball velocity was the second fastest by an NL rookie reliever since 2015, behind Jordan Hicks/STL (100.5)...His 102.9 MPH pitch to strike out Jake Bauers on Sept. 13, 2024 vs. Brewers (eighth inn.) was the fastest pitch thrown by a D-backs pitcher in the pitch tracking era (since 2008)...15-GAME STREAK: In 2024, recorded a career-high 15 straight scoreless appearances (19.0 IP) from May 3-June 14, going 2-0 with a 1.16 WHIP, opponent .209 AVG (14-for-67), 8 walks and 23 strikeouts.
2023
In his first season with the D-backs, went 0-0 with one save, a 12.60 ERA (14 ER in 10.0 IP) and 14 strikeouts over nine games...Spent most of the season with Triple-A Reno, going 2-1 with nine saves, a 4.20 ERA (23 ER in 49.1 IP) and 67 strikeouts in 47 games...Received his first call-up to the Majors on June 27 but did not make his debut before being optioned two days later...Made his Major League debut on July 7 vs. Pirates in his second stint with Arizona (two ER in 1.0 IP) and recorded two strikeouts...Recorded his first save on Aug. 17 @ Padres, striking out three over 1.1 innings...At age 22, became the second-youngest D-backs reliever to collect his first Major League save within his first five games (Byung-Hyun Kim, 20-130). During his save opportunity, posted a 102.7 MPH fastball...Limited right-handers to .192 (5-for-26) with eight strikeouts...Opponents hit .227 (5-for-22) with runners in scoring position...Threw his fastball 60.2 pct. of the time and averaged 100.5 mph per pitch...Hitters were 1-for-12 off his splitter with eight strikeouts and a 58.3 whiff percentage.
2022
Combined to go 3-2 with a 3.00 ERA (12 ER in 36.0 IP) in 18 games between High-A Hillsboro, Double-A Amarillo and Triple-A Reno....Began the season on the injured list (recovery from Tommy John surgery) …reinstated on July 22 and assigned to Hillsboro, going 1-2 with a 2.67 ERA (8 ER in 27.0 IP) in 13 games....Was promoted to Amarillo on Sept. 13 and after two appearances, was moved up to Reno on Sept. 20, where he made three appearances....Pitched for Salt River in the 2022 Fall League and was selected to the "Fall Stars Game" with Dbacks' infielder Jordan Lawlar after posting a 2.35 ERA (2 ER in 7.2 IP) and 13 strikeouts.
2021
Limited to seven starts with Low-A Visalia before undergoing season-ending Tommy John surgery on July 6…went 1-3 with a 6.65 ERA (17 ER in 23.0 IP) and 24 strikeouts.
2019
Combined to go 1-3 with a 2.89 ERA (18 ER in 56.0 IP) in 18 games with DSL D-backs 2 and the ACL D-backs.
