Kansas State University Athletics
2025 Baseball Roster
Jersey Number 99
JJ Slack
- Position:
- LHP
- Height:
- 5-10
- Weight:
- 190
- Class:
- Graduate Student
- Hometown:
- Liberty, Texas
- High School:
- Liberty HS
- Prev School:
- Southwestern
SIXTH-YEAR (2025)
Made 18 appearances in 2025 with two starts … ranked fifth on the team with 16 appearances out of the bullpen... Compiled a 9.00 ERA with a 2-3 record ... Tallied 53 strikeouts – good for fifth on the team – in 32 innings pitched while 22 walks ... Team posted a 6-12 record in games he pitched... Held opponents scoreless in six of 16 relief appearances ... Allowed just five of 18 inherited runners to score ... Made season debut on February 15 at Coastal Carolina … Picked up his first win against Texas Tech on March 30, tossing two scoreless innings with five strikeouts … Logged at least two innings in eight of 16 appearances out of the pen, recording three or more strikeouts in eight games … Struck out six of 12 batters faced against Houston on April 27, and matched with a season-high six at BYU (may 1) … Made eight relief appearances in big 12 play … Went 2-1 in league action with a 8.83 ERA (17.1 IP, 17 ER) … Was fourth on the team in strikeouts in Big 12 play, issuing nine walks … opponents hit .265 against him in big 12 games … Threw 1/3 inning against Texas on June 1 at the NCAA Austin Regional.
GRADUATE (2024)
Made 15 relief appearances in 2024 … Went 2-1 with a 4.26 ERA (12 ER, 25.1 IP) … Struck out 28, walked 13 and opponents hit .255 against him … Made debut on March 13 against South Dakota, tossing a scoreless inning with one strikeout … Earned first win of the year against Omaha, allowing one run and two hits over two innings on April 23 … Punched out five over 2 2/3 innings against Oklahoma State on April 20 … Struck out two in scoreless inning against TCU on May 23 at the Big 12 Championship … Did not allow an earned run in eight of 15 appearances and struck out at least three hitters on five occasions … Tossed the final inning of the Fayetteville Regional Championship, allowing no runs with a strikeout to secure the title … During Big 12 play, went 1-1 with a 5.40 ERA (8 ER, 13.1 IP) while striking out 16 in seven appearances … Made two appearances in the NCAA Tournament, allowing just one hit.
SOUTHWESTERN
Spent four seasons at Southwestern with 34 appearances and 12 starts … Went 8-7 with a save for a 4.67 ERA (55 ER, 106.0 IP) and 151 strikeouts and 77 walks … Had a 1.47 WHIP with a 12.82 strikeout-to-walk ratio … Struck out a career-high nine vs. Austin College (April 24, 2021) … Tossed a career-high 7.0 innings against Texas Lutheran (May 7, 2021).
HIGH SCHOOL
Was a four-year multi-sport letterwinner at Liberty High School in baseball, track and golf, and lettered three seasons in football … Two-time First Team All-District in baseball and was named the 2017 Defensive Player of the Year the 2019 Pitcher of the Year … Two-time Newcomer of the Year accolades in football and received First Team All-District and District MVP recognition … two-time single-game rushing leader (2017, 2018).
PERSONAL
Born May 15, 2001 in Texas ... Son of Joe and Karen Slack and brother to Jessica and Kaitlyn … Sister, Kaitlyn, played softball at Texas while his cousin Andrew Fregia played baseball in the Baltimore Orioles organization … Plans to major in sports nutrition at K-State.
Made 18 appearances in 2025 with two starts … ranked fifth on the team with 16 appearances out of the bullpen... Compiled a 9.00 ERA with a 2-3 record ... Tallied 53 strikeouts – good for fifth on the team – in 32 innings pitched while 22 walks ... Team posted a 6-12 record in games he pitched... Held opponents scoreless in six of 16 relief appearances ... Allowed just five of 18 inherited runners to score ... Made season debut on February 15 at Coastal Carolina … Picked up his first win against Texas Tech on March 30, tossing two scoreless innings with five strikeouts … Logged at least two innings in eight of 16 appearances out of the pen, recording three or more strikeouts in eight games … Struck out six of 12 batters faced against Houston on April 27, and matched with a season-high six at BYU (may 1) … Made eight relief appearances in big 12 play … Went 2-1 in league action with a 8.83 ERA (17.1 IP, 17 ER) … Was fourth on the team in strikeouts in Big 12 play, issuing nine walks … opponents hit .265 against him in big 12 games … Threw 1/3 inning against Texas on June 1 at the NCAA Austin Regional.
GRADUATE (2024)
Made 15 relief appearances in 2024 … Went 2-1 with a 4.26 ERA (12 ER, 25.1 IP) … Struck out 28, walked 13 and opponents hit .255 against him … Made debut on March 13 against South Dakota, tossing a scoreless inning with one strikeout … Earned first win of the year against Omaha, allowing one run and two hits over two innings on April 23 … Punched out five over 2 2/3 innings against Oklahoma State on April 20 … Struck out two in scoreless inning against TCU on May 23 at the Big 12 Championship … Did not allow an earned run in eight of 15 appearances and struck out at least three hitters on five occasions … Tossed the final inning of the Fayetteville Regional Championship, allowing no runs with a strikeout to secure the title … During Big 12 play, went 1-1 with a 5.40 ERA (8 ER, 13.1 IP) while striking out 16 in seven appearances … Made two appearances in the NCAA Tournament, allowing just one hit.
SOUTHWESTERN
Spent four seasons at Southwestern with 34 appearances and 12 starts … Went 8-7 with a save for a 4.67 ERA (55 ER, 106.0 IP) and 151 strikeouts and 77 walks … Had a 1.47 WHIP with a 12.82 strikeout-to-walk ratio … Struck out a career-high nine vs. Austin College (April 24, 2021) … Tossed a career-high 7.0 innings against Texas Lutheran (May 7, 2021).
HIGH SCHOOL
Was a four-year multi-sport letterwinner at Liberty High School in baseball, track and golf, and lettered three seasons in football … Two-time First Team All-District in baseball and was named the 2017 Defensive Player of the Year the 2019 Pitcher of the Year … Two-time Newcomer of the Year accolades in football and received First Team All-District and District MVP recognition … two-time single-game rushing leader (2017, 2018).
PERSONAL
Born May 15, 2001 in Texas ... Son of Joe and Karen Slack and brother to Jessica and Kaitlyn … Sister, Kaitlyn, played softball at Texas while his cousin Andrew Fregia played baseball in the Baltimore Orioles organization … Plans to major in sports nutrition at K-State.
K-State Baseball | Fall Ball Recap 2025
Tuesday, November 11
K-State BSB | Postgame Press Conference vs Texas
Sunday, June 01
K-State Baseball | Game Highlights vs Houston Christian (Austin Regional)
Sunday, June 01
K-State BSB | Game Highlights vs Houston Christian (Austin Regional)
Saturday, May 31
