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|Battle of Ganryujima|
|Conflict: Warring States Period|
|Date: April 13, 1612|
|Place: Ganryujima, Yamaguchi Province|
|Outcome: Miyamoto victory|
Musashi Miyamoto rowed ashore onto Ganryu Island, preparing to fight his best-known rival, Kojiro Sasaki. Miyamoto and Kojiro fought for minutes, until Miyamoto fractured Kojiro's neck with an oar, nearly killing him. Kojiro narrowly survived, as Miyamoto left the scene, believing him to be dead.