Chiba Lotte Marines
| Chiba Lotte Marines | |||||
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| 千葉ロッテマリーンズ | |||||
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| Information | |||||
| League | Nippon Professional Baseball
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| Location | Mihama-ku, Chiba, Chiba, Japan | ||||
| Ballpark | ZOZO Marine Stadium | ||||
| Founded | November 26, 1949 | ||||
| Nickname(s) | Kamome (鴎, seagulls) | ||||
| Japan Series championships | 4 (1950, 1974, 2005, 2010) | ||||
| PL pennants | 5 (1950, 1960, 1970, 1974, 2005) | ||||
| Playoff berths | 14 (1974, 1977, 1980, 1981, 2005, 2007, 2010, 2013, 2015, 2016, 2020, 2021, 2023, 2024) | ||||
| Former name |
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| Former ballparks |
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| Colors | Black, Grey, White | ||||
| Mascot | Mar-kun, Rine-chan, and Zu-chan | ||||
| Retired numbers | |||||
| Ownership | Katsumi Kawai | ||||
| Management | Lotte Holdings | ||||
| President | Shunsuke Kosaka | ||||
| General manager | Naoki Matsumoto | ||||
| Manager | Saburo Omura | ||||
| Website | https://www.marines.co.jp/ | ||||
| Current uniforms | |||||
The Chiba Lotte Marines (千葉ロッテマリーンズ, Chiba Rotte Marīnzu) are a professional baseball team in the Pacific League based in Chiba City, Chiba Prefecture in the Kantō region of Japan and owned by Lotte Holdings Co., Ltd. The Marines were a founding member of the Pacific League in 1950 as the then-known Mainichi Orions when the Japanese Baseball League reorganized into Nippon Professional Baseball, where they won the inaugural 1950 Japan Series. Since 1992, the Marines' home ballpark has been the ZOZO Marine Stadium, located in the Mihama Ward of Chiba, with seats for up to 30,118 people.
The "Marines" name originates from the name of the ballpark, also officially named the Chiba Marine Stadium, because it is located at the seaside. Six players have won the Nippon Professional Baseball Most Valuable Player Award with the team; the last member to win the MVP was in 1985, the longest current drought for all twelve teams.
As of the end of the 2025 season, the franchise's all-time record is 4930-4928-408 (.500).