Koki Kitayama

Koki Kitayama (北山 亘基, Kitayama Koki; born April 10, 1999) is a Japanese professional baseball pitcher for the Hokkaido Nippon-Ham Fighters of Nippon Professional Baseball (NPB).^[1]

Koki Kitayama
Kitayama with the Hokkaido Nippon-Ham Fighters
Hokkaido Nippon-Ham Fighters – No. 15
Pitcher
Born: (1999-04-10) April 10, 1999 (age 26) Keihoku, Kyoto, Japan
Bats: Right Throws: Right
NPB debut
March 25, 2022, for the Hokkaido Nippon-Ham Fighters
NPB statistics (through 2025 season)
Win–loss record	23–16
Earned run average	2.41
Strikeouts	346
Teams
Hokkaido Nippon-Ham Fighters (2022–present)
Career highlights and awards
NPB All-Star (2025)
Medals Men's baseball Representing  Japan WBSC Premier12 2024 Team

Career

On June 19, 2025, Kitayama pitched a perfect game until the bottom of the 9th inning, when he allowed a solo home run to Yomiuri Giants catcher Takumi Ohshiro.^[2] He was named an NPB All-Star for the first time in 2025.