Jun-Seok Shim

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Jun-Seok Shim
New York Mets
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 in the New York Mets organization.

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]

New York Mets

On December 29, 2025, Shim signed a minor league contract with the New York Mets.[15]

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.
  15. https://www.milb.com/transactions/2025-12-29