Masato Yoshii

Masato Yoshii 吉井理人
Yoshii with the Chiba Lotte Marines
Pitcher / Coach / Manager
Born: (1965-04-20) April 20, 1965 Aridagawa, Wakayama, Japan
Batted: Right Threw: Right
Professional debut
NPB: September 16, 1985, for the Kintetsu Buffaloes
MLB: April 5, 1998, for the New York Mets
Last appearance
NPB: 2007, for the Chiba Lotte Marines
MLB: September 11, 2002, for the Montreal Expos
NPB statistics
Win–loss record	89–82
Earned run average	3.86
Strikeouts	763
MLB statistics
Win–loss record	32-47
Earned run average	4.62
Strikeouts	447
Stats at Baseball Reference

Teams
As player Kintetsu Buffaloes (1985–1994) Yakult Swallows (1995–1997) New York Mets (1998–1999) Colorado Rockies (2000) Montreal Expos (2001–2002) Orix BlueWave / Orix Buffaloes (2003–2007) Chiba Lotte Marines (2007) As coach Hokkaido Nippon-Ham Fighters (2008–2012) Fukuoka SoftBank Hawks (2015) Hokkaido Nippon-Ham Fighters (2016–2018) Chiba Lotte Marines (2019–2021) As manager Chiba Lotte Marines (2023–2025)

Masato Yoshii (吉井理人, Yoshii Masato; born April 20, 1965), nicknamed "Oiyan", is a Japanese former professional baseball pitcher, coach, and manager. He played in Nippon Professional Baseball (NPB) from 1985 to 2007 for the Kintetsu Buffaloes, Yakult Swallows, Orix BlueWave / Orix Buffaloes, and Chiba Lotte Marines. He also played in Major League Baseball (MLB) from 1998 to 2002 for the New York Mets, Colorado Rockies, and Montreal Expos.