KNOCK OUT 63 Spring Fes in Okinawa was a kickboxing event held by KNOCK OUT on Saturday, April 18, 2026, at the Okinawa Convention Center in Ginowan, Okinawa, Japan. In the main event, Ryoki faced Sitthichai Sitsongpeenong.
Ryoki
Self
Sitthichai Sitsongpeenong
Spike Carlyle
Minoru Kimura
Ryusei Kumagai
Alen Kalac
Issei Saenchai-Gym
Krungthai T-Ded99
Fumiya Osawa
Tomohiro Adaniya
Yuma Nakamura
Hikaru Fukunaga
Shuhei Kumura
Tatsuki
Kanato Shimoji
Yuzuki Bravely
Soichiro Arata
Yuki Ganeko
Ritomo
Ryoma Sone
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