Tetsuya Yamaguchi

Tetsuya Yamaguchi
Yomiuri Giants – No. 47
Born: (1983-11-11) November 11, 1983
Yokohama, Kanagawa, Japan[1]
Bats: Left Throws: Left
NPB debut
April 29, 2007, for the Yomiuri Giants
NPB statistics
(through 2016 season)
Win-Loss 51-26
ERA 2.30
Strikeouts 499
Career highlights and awards
Last updated on: 8 December 2008
Tetsuya Yamaguchi
Medal record
Representing  Japan
Men's Baseball
World Baseball Classic
2009 Los Angeles Team

Tetsuya Yamaguchi (山口 鉄也, Yamaguchi Tetsuya, born November 11, 1983 in Yokohama, Kanagawa, Japan) is a Japanese Nippon Professional Baseball player with the Yomiuri Giants in Japan's Central League. He was playing in the Missoula Osprey (Advanced Rookie level under Arizona Diamondbacks) before he was drafted by the Giants in 2005.

He was awarded as Central League's Rookie of the Year in 2008, beating his teammate and another award favorite Hayato Sakamoto, by finishing with an 11-2 with 67 appearances, the most wins of all-time in Giants' relief pitchers. He was then selected to the National team playing in 2009 World Baseball Classic, being the only relief pitcher (other than closers) selected by the National team.


  1. "Archived copy". Archived from the original on 2008-12-11. Retrieved 2008-12-09.

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