However, on September 21 (August 23 in old lunar calendar) before joining the army led by Miura, Yoritomo fought in the Battle of Ishibashiyama against approximately 3000 horsemen lead by Kagechika OBA, Shigekuni SHIBUYA, Naozane KUMAGAI, Tsuneyoshi YAMAUCHISUDO and Sukechika ITO, who served Taira clan.
しかし三浦軍との合流前の23日に石橋山の戦いで、頼朝らは平家に仕える大庭景親、渋谷重国、熊谷直実、山内首藤経俊、伊東祐親ら三千余騎と戦った。