Watch Free Online on Hurawatch. The K-1 WORLD GP 2017 JAPAN takes place on September 18, 2017, at the Saitama Super Arena Community Arena in Saitama, Japan. This event includes an eight-man tournament to determine the welterweight champion with fighters Yuta Kubo and Minoru Kimura. Takeru Segawa defends his featherweight title against Junguang Wang. Taiga and Yoshiki Takei compete in non-title superfights.