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There are 3 Japanese MLB players played for the Baltimore Orioles
Shintaro
Fujinami
RHP 
Free Agent
(Hanshin Tigers, Oakland Athletics, Baltimore Orioles, New York Mets)
藤浪晋太郎 (ふじなみ・しんたろう)
Bats: R Throws: R
Current Age 30
6-6, 180lb (198cm, 81kg)
MLB Debut:
2023-04-01 (28)
Tomoyuki
Sugano
(Yomiuri Giants, Baltimore Orioles)
菅野智之 (すがの・ともゆき)
Bats: R Throws: R
Current Age 35
6-1, 198lb (185cm, 89kg)
MLB Debut: Not Yet
Koji
Uehara
RHP 
Boston Red Sox
(Baltimore Orioles, Texas Rangers, Boston Red Sox , Chicago Cubs, Yomiuri Giants)
上原浩治 (うえはら・こうじ)
Bats: R Throws: R
Current Age 49
6-2, 195lb (188cm, 88kg)
MLB Debut:
2009-04-08 (34)