K-1 WORLD GP 2020: Winter Crucial: The K-1 WORLD GP 2020 JAPAN Winter Crucial takes place on December 13, 2020, at Ryogoku Kokugikan in Tokyo, Japan. This kickboxing event features Koya Urabe defending his Lightweight title against Yuki Yoza in the main event. Other fighters include Takeru Segawa, Leona Pettas, Hiromi Wajima, and Minoru Kimura across the card. A Welterweight Grand Prix with eight competitors like Kenta Hayashi also highlights the night. It’s K-1’s final major event of 2020.