There are 7 Japanese MLB players played for the Chiba Lotte Marines
Hirokazu
Sawamura
(Yomiuri Giants, Chiba Lotte Marines, Boston Red Sox )
澤村拓一 (さわむら・ひろかず)
Bats: R Throws: R
Current Age 36
6-0, 212lb (183cm, 96kg)
MLB Debut:
2021-04-02 (32)
Tsuyoshi
Nishioka
SS/2B 
Minnesota Twins
(Minnesota Twins, Chiba Lotte Marines, Hanshin Tigers)
西岡剛 (にしおか・つよし)
Bats: S Throws: R
Current Age 39
6-1, 175lb (185cm, 79kg)
MLB Debut:
2011-04-01 (26)
Yasuhiko
Yabuta
(Kansas City Royals, Chiba Lotte Marines)
薮田安彦 (やぶた・やすひこ)
Bats: R Throws: R
Current Age 50
6-2, 190lb (188cm, 86kg)
MLB Debut:
2008-04-05 (34)
Masahide
Kobayashi
(Cleveland Indians, Chiba Lotte Marines, Yomiuri Giants, ORIX Buffaloes)
小林雅英 (こばやし・まさひで)
Bats: R Throws: R
Current Age 49
6-0, 195lb (183cm, 88kg)
MLB Debut:
2008-04-02 (33)
Tadahito
Iguchi
(Chicago White Sox, Philadelphia Phillies, San Diego Padres, Chiba Lotte Marines, Fukuoka SoftBank Hawks)
井口資仁 (いぐち・ただひと)
Bats: R Throws: R
Current Age 49
5-10, 185lb (178cm, 83kg)
MLB Debut:
2005-04-04 (30)
Satoru
Komiyama
RHP 
New York Mets
(New York Mets, Chiba Lotte Marines, Yokohama DeNA BayStars)
小宮山悟 (こみやま・さとる)
Bats: R Throws: R
Current Age 58
6-0, 183lb (183cm, 83kg)
MLB Debut:
2002-04-04 (36)
Hideki
Irabu
RHP 
New York Yankees
(New York Yankees, Texas Rangers, Chiba Lotte Marines, Hanshin Tigers, Montreal Expos)
伊良部秀輝 (いらぶ・ひでき)
Bats: R Throws: R
Current Age 42
6-4, 240lb (193cm, 108kg)
MLB Debut:
1997-07-10 (28)