Hiroki Nakajima

Krush 72 was a kickboxing event promoted by K-1 Japan Group, held on January 15, 2017 at Korakuen Hall in Tokyo. The card featured the Krush women's title match between Kana and Mellony Geugjes and the Krush -70kg title match between Jordann Pikeur and Yu Hirono.

Krush 74 was a kickboxing event promoted by K-1 Japan Group, held on March 3, 2017 at Korakuen Hall in Tokyo.

Krush 51 was a kickboxing event held on February 6, 2015 at Korakuen Hall in Tokyo, Japan. The main event was a Krush -58kg title match between Takeru and Yuta Otaki, and the card also featured Masaaki Noiri against Ilias Bulaid in a -65kg super fight and a semi-final of the tournament for the vacant third Krush -70kg title between Hiroki Nakajima and Shintaro Matsukura.

Krush 65 was a kickboxing event promoted by K-1 Japan Group (Krush), held on April 10, 2016 at Korakuen Hall in Tokyo.

Krush 69 was a kickboxing event promoted by K-1 Japan Group, held on September 30, 2016 at Korakuen Hall in Tokyo.

Krush 53 was a kickboxing event promoted by K-1 Japan Group (Krush), held on April 12, 2015 at Korakuen Hall in Tokyo.

Krush 40 was a kickboxing event held on April 15, 2014 at Korakuen Hall in Tokyo, Japan. The double main event featured a Krush -70kg title match between Yasuhiro Kido and Hiroki Nakajima and a bout for the vacant Krush -67kg title between Yuya Yamamoto and Keita Makihira. The card also included super fights for Masahiro Yamamoto against Yannis El Hajaoui and Shintaro Matsukura against Onder Ural.

MAROOMS presents KNOCK OUT 2025 vol.3 took place on May 18, 2025, at Korakuen Hall in Tokyo, Japan, promoted by Knock Out. The main event features Shoji Otani defending his KNOCK OUT-BLACK Lightweight (62.5kg) title against Fumiya Osawa in a 3-round (plus 1 extension) title fight. Other key bouts include Kuntap Charoenchai vs. Yoshiro Tsuzaki for the KNOCK OUT-RED Super Welterweight (70kg) title and Hiroki Nakajima vs. Yuki for the KNOCK OUT-BLACK Super Welterweight (70kg) interim title.

MAROOMS presents KNOCK OUT.59 takes place on November 15, 2025, at Korakuen Hall in Tokyo, Japan.

Krush 36 was a kickboxing event held on January 4, 2014 at Korakuen Hall in Tokyo, Japan. The main event was a Krush -58kg title eliminator between Yuta Otaki and Shota Kanbe, and the card also featured a -70kg super fight between Hiroki Nakajima and Ha Woon Pyo, the semi-finals of the inaugural Krush women's title tournament and three WILDRUSH League 2014 bouts.

The Champion Carnival was a match between four-weight champions who were born during a year of battle, and they gathered together to compete in a title match. Furthermore, the final match of 2015, where all the star players participated and attracted a huge crowd packed at Yoyogi Gymnasium.

The new K-1 has left Yoyogi, which has been held since its launch, and moved to Saitama Super Arena. The first memorable event will be hosting a super welterweight tournament, which is said to be the most layered in the world. How did the four Japanese national team players compete against the powerful overseas teams who have shown strength in past tournaments? It also includes all-out battles in which champions from K-1 weight classes such as Gao, Louis, Takeru, and Taiga also participated.

Open up a new era and surpass MAX. Includes 17 matches including the world's most competitive clash. Jordan Piqueaux vs Maratt Gregorian!