Jun-Seok Shim

Jun-Seok Shim
Free agent
Pitcher
Born: (2004-04-09) April 9, 2004
Seongnam, Gyeonggi Province, South Korea
Bats: Right
Throws: Right

Jun-Seok Shim (Korean: 심준석; born April 9, 2004) is a South Korean professional baseball pitcher who is a free agent.

Amateur career

Shim attended Duksoo High School in Seoul, South Korea.[1] In 2020, he went 4–1 with a 1.42 ERA and 32 strikeouts over 19 innings pitched. Shim suffered an elbow injury that hampered his 2021 season.[2] He struggled with a back injury in 2022 and pitched 20+2⁄3 innings over 12 appearances, posting a 5.14 ERA with 40 strikeouts and 22 walks.[3] Shim did not apply for the 2022 Korea Baseball Organization Draft and hired agent Scott Boras to focus on being signed by a Major League Baseball (MLB) team as an international free agent.[4][5]

Professional career

Pittsburgh Pirates

Shim was signed by the Pittsburgh Pirates organization on January 26, 2023 and received a $750,000 signing bonus.[6][7] He began the 2023 season in extended spring training.[8] Shim was later assigned to the Rookie-level Florida Complex League Pirates,[9] where he recorded a 3.38 ERA with 13 strikeouts over eight innings pitched.

Shim was placed on the injured list to begin the 2024 campaign due to a shoulder injury, which ultimately caused him to miss the entirety of the season.[10]

Miami Marlins

On July 30, 2024, the Pirates traded Shim and Garret Forrester to the Miami Marlins in exchange for Bryan De La Cruz.[11] He did not appear for the organization in 2024 following his acquisition. Shim played in the Arizona Fall League for the Peoria Javelinas during the offseason, but struggled to a 19.80 ERA with five strikeouts over five innings of work.[12]

Shim made 13 appearances for the rookie-level Florida Complex League Marlins in 2025, but struggled to an 0-3 record and 10.80 ERA with 16 strikeouts and one save across 13+1⁄3 innings pitched.[13] Shim was released by the Marlins organization on August 4, 2025.[14]

References

  1. ^ "Teen prospect Shim Jun-seok signs with Pittsburgh Pirates". Korea JoongAng Daily. January 16, 2023. Retrieved January 23, 2023.
  2. ^ delos Santos, Justice (January 26, 2023). "Shim realizes first part of dream as prospect signs with Bucs". MLB.com. Retrieved January 27, 2023.
  3. ^ "For Pirates, signing South Korean pitcher Jun-Seok Shim signifies global approach to scouting". Pittsburgh Tribune-Review. January 26, 2023. Retrieved January 27, 2023.
  4. ^ "Looking to join MLB club, high school pitching prospect skips KBO draft". The Korea Herald. August 17, 2022. Retrieved January 23, 2023.
  5. ^ "Pirates sign South Korean pitching prospect Jun-Seok Shim". Pittsburgh Tribune-Review. January 15, 2023. Retrieved January 27, 2023.
  6. ^ Biertempfel, Rob (January 15, 2023). "Pirates' international signing class is headlined by Korean pitcher prospect Jun-Seok Shim". The Athletic. Retrieved January 23, 2023.
  7. ^ "Jun-Seok Shim offers reminder of something that's not optional for Pirates". Pittsburgh Post-Gazette. January 26, 2023. Retrieved January 27, 2023.
  8. ^ "Pirates' Jun-Seok Shim: Recovering from ankle issue". CBS Sports. RotoWire. April 7, 2023. Retrieved April 10, 2023.
  9. ^ "Pirates' Jun-Seok Shim: Makes pro debut". CBS Sports. RotoWire. June 20, 2023. Retrieved June 20, 2023.
  10. ^ "Pirates' Jun-Seok Shim: Out with shoulder injury". cbssports.com. Retrieved August 24, 2025.
  11. ^ "Pirates deal for slugging OF Bryan De La Cruz from Miami". MLB.com.
  12. ^ "What happened to Jun-Seok Shim?". fishonfirst.com (in Spanish). Retrieved August 24, 2025.
  13. ^ "Marlins release Koo Woo-seok as Shim Jun-seok struggles with control issues". biz.chosun.com (in Spanish). Retrieved August 24, 2025.
  14. ^ "Korean pitching prospect released by U.S. minor league team". koreatimes.co.kr (in Spanish). Retrieved August 24, 2025.
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