There are 7 Japanese MLB players played for the Saitama Seibu Lions
Shogo
Akiyama
(Saitama Seibu Lions, Cincinnati Reds)
秋山翔吾 (あきやま・しょうご)
Bats: L Throws: R
Current Age 35
6-0, 190lb (183cm, 86kg)
MLB Debut:
2020-07-24 (32)
Yusei
Kikuchi
(Saitama Seibu Lions, Seattle Mariners, Toronto Blue Jays)
菊池雄星 (きくち・ゆうせい)
Bats: L Throws: L
Current Age 32
6-0, 194lb (183cm, 87kg)
MLB Debut:
2019-03-21 (27)
Kazuhisa
Makita
RHP 
San Diego Padres
(San Diego Padres, Saitama Seibu Lions, Tohoku Rakuten Golden Eagles)
牧田和久 (まきた・かずひさ)
Bats: R Throws: R
Current Age 39
5-10, 181lb (178cm, 82kg)
MLB Debut:
2018-03-30 (33)
Daisuke
Matsuzaka
RHP 
Boston Red Sox
(Saitama Seibu Lions, Boston Red Sox , New York Mets, Fukuoka SoftBank Hawks, Chunichi Dragons)
松坂大輔 (まつざか・だいすけ)
Bats: R Throws: R
Current Age 43
6-0, 205lb (183cm, 92kg)
MLB Debut:
2007-04-05 (26)
Kazuo
Matsui
2B/SS 
New York Mets
(New York Mets, Colorado Rockies, Houston Astros, Saitama Seibu Lions, Tohoku Rakuten Golden Eagles)
松井稼頭央 (まつい・かずお)
Bats: S Throws: R
Current Age 48
5-10, 187lb (178cm, 84kg)
MLB Debut:
2004-04-06 (28)
Micheal
Nakamura
RHP 
Minnesota Twins
(Minnesota Twins, Toronto Blue Jays, Hokkaido Nippon Ham Fighters, Yomiuri Giants, Saitama Seibu Lions)
マイケル中村 (なかむら・マイケル)
Bats: R Throws: R
Current Age 47
5-10, 170lb (178cm, 77kg)
MLB Debut:
2003-06-07 (26)
Kazuhisa
Ishii
(Tokyo Yakult Swallows, Los Angeles Dodgers, New York Mets, Saitama Seibu Lions)
石井一久 (いしい・かずひさ)
Bats: L Throws: L
Current Age 50
6-0, 215lb (183cm, 97kg)
MLB Debut:
2002-04-06 (28)