Jeff Criswell #23

Jeffrey Kelley Criswell…son of Brian and Patti…has one sister, Natalie, who swam collegiately at Bowling Green...Father pitched at Western Michigan University and played five seasons in Oakland’s Minor League system (1984-88) after being selected in the 1984 June Amateur Draft...Majored in sport management at the University of Michigan...Earned All-Big Ten First Team honors as a sophomore in 2019 and was selected to the USA Baseball Collegiate National Team...2.88 career ERA (162.1 IP, 52 ER) with 78 walks and 174 strikeouts for the Wolverines.

2025

Missed the entire 2025 season after undergoing Tommy John surgery in March 2025...Placed on the 15-day injured list on March 27 before being transferred to the 60-day IL on April 14 (Tommy John surgery)...Did not appear in a Major League Spring Training game.

2024

Made his Major League debut with the Rockies on Aug. 21 at Washington (1.0 IP, 1 H, 0 ER)...appeared in 13 Major League games, going 1-0 with a 2.75 ERA (19.2 IP, 6 ER) with 27 strikeouts and nine walks, the second-most strikeouts through a Rockies reliever’s first 13 career games in franchise history...Pitched exclusively out of the bullpen for the first time...Had his contract selected from Triple-A Albuquerque on Aug. 21 after posting a 2.57 ERA (7.0 IP, 2 ER) with no walks and 12 strikeouts in five appearances with the Isotopes in August...39.0 whiff percentage was sixth-highest among all Major League pitchers (min. 75 PA)...Gave up home runs to three consecutive batters faced on Aug. 25 at New York-AL (Soto, Judge, Stanton)...marked the eighth time in franchise history, the second time on the road, the Rockies allowed back-to-back-to-back homers in a game (last: Sept. 8, 2023 at San Francisco)...Struck out five of the six batters he faced Aug. 28 against the Marlins...became the first reliever in franchise history to strike out five over two scoreless frames in an outing within his first four career games...Struck out a season-best six batters through a season-best 2.2 innings on Sept. 15, the most strikeouts for a Rockies reliever in 2024...became the fifth reliever in franchise history to strike out as many over 2.2 or fewer frames, the first since Daniel Bard on Oct. 2, 2022 at Los Angeles-NL...first Rockie reliever to have two relief outings with five or more strikeouts in a single season since Tommy Kahnle (2014)...Went 1-1 with a 6.24 ERA (57.2 IP, 40 ER), 28 walks and 83 strikeouts in 35 appearances with Albuquerque...Ranked second among Isotopes with 13.0 SO/9 (min. 30.0 IP).

2023

Set career highs in starts (26), innings pitched (121.0) and strikeouts (135) with Triple-A Albuquerque... Finished the season 5-10 with a 7.51 ERA (121.0 IP, 101 ER) in 29 games (26 starts) with the Isotopes... Ranked third in the PCL in strikeouts (135), fifth in games started (26) and seventh in innings (121.0 IP)... Struck out a season-best nine batters twice: July 1 vs. El Paso (5.0 IP) and Sept. 1 at Sacramento (6.1 IP)... 9.51 ERA (53.0 IP, 56 ER) through his first 14 appearances … 5.96 ERA (68.0 IP, 45 ER) in 15 games from June 25 through the end of the season. 

2022

Made 21 combined starts between High-A Lansing (10), Double-A Midland (nine) and Triple-A Las Vegas (two), going 4-10 with a 4.03 ERA (118.1 IP, 53 ER)...Went 2-3 with a 3.78 ERA (50.0 IP, 21 ER) and 58 strikeouts with Lansing, holding opponents to a .206 average (37-for-180)...Earned Midwest Pitcher of the Week honors for the week of May 1 after tossing a complete game shutout in game two of a doubleheader against Lake County (7.0 IP, H, BB, 6 SO)...2-6 with a 4.21 ERA (57.2 IP, 27 ER) in 12 outings (nine starts) with Midland and 0-1 with a 4.22 clip (10.2 IP, 5 ER) in two starts with Las Vegas.

2021

Made five starts for High-A Lansing in his first professional season, logging a 4.50 ERA (12.0 IP, 6 ER) with four walks and 12 strikeouts.

2020

Originally selected by Oakland in the second round of the First-Year Player Draft but did not play due to the cancellation of the Minor League season.