DREAM.15 went down over the weekend in Japan and Shinya Aoki retained his lightweight title by submitting opponent Tatsuya  Kawajiri. Additionally, Gegard Mousasi rebounded from his last loss with a victory over Jake O’Brien. Full fight results below:

Shinya Aoki defeats Tatsuya Kawajiri by submission (achilles lock) – Round 1 @ 1:53

Gesias Cavalcante defeats Katsunori Kikuno via split decision

Gegard Mousasi defeats Jake O’Brien via submission (standing guillotine) – Round 1 @ 0:31

Tatsuya Mizuno defeats Melvin Manhoef via submission (kimura) – Round 1 @ 7:37

Michihiro Omigawa defeats Jong Young Sam via submission (guillotine choke) at Round 1 @ 7:31

Mitsuhiro Ishida defeats Daiki Hata via unanimous decision

Kazuhiro Nakamura defeats Karl Amoussou via unanimous decision