Xu Jiao
Weiwei
Sung Dong-il
Sung Chung-Su
Kim Kang-woo
Baseball Team Director
Kim Jung-tae
Rival Baseball Team Director
Joe Odagiri
Owner of Baseball Team Junichi Ito
Kim Hee-won
Loan Shark
Kim Eung-soo
KBO Commissioner
Byun Hee-bong
Weiwei's Grandfather
Kim Ji-young
Young Weiwei
Ko Chang-seok
Detective So
Ma Dong-seok
Caster
Kim Jung-eun
Jung-eun
Kim Heung-rae
Mr. Go
Jo Jae-yun
Orthopedic Doctor
Jeong In-gi
Gong In-gu
Jung Ji-yoon
Show Host
Kim In-chul
Referee
Lee Jun-hyeok
Zeroz