They do things a bit differently in Japan. On December 31st Rizin is putting on not one, but two, fight cards and the latter will feature a boxing exhibition involving Floyd Mayweather and Tenshin Nasukawa.

The event in the morning is entitled Heisei’s Last Yarennoka. It is scheduled to begin at 9am (local time) while the afternoon event will start at 3pm and in total there are 21 fights on the two cards.

The latest batch of matchups to be announced includes a catchweight contest between a veteran and an up and coming contender at Heisei’s Last Yarennoka. Takeshi Inoue (24-11) has been booked to take on Mikuru Asakura (8-1-0-1) who is 11 years his junior and has won two out of two for Rizin.

Younger brother Kai Asakura (11-1) will be in action later in the day. He has an opportunity to avenge the only loss of his career when he rematches Je Hoon Moon (11-11) at Rizin 14.

Broadcast details are not available at the time of writing but an announcement is expected in the coming hours.

Rizin FF 14, Tokyo, December 31st (afternoon)
Exhibition: Floyd Mayweather vs. Tenshin Nasukawa (Welterweight)
Kyoji Horiguchi vs. Darrion Caldwell (For Rizin Bantamweight Title)
Kanna Asakura vs. Ayaka Hamasaki (For Rizin Atomweight Title)
Jiri Prochazka vs. Brandon Halsey (Light Heavyweight)
Gabi Garcia vs. Barbara Nepomuceno (Heavyweight)
Daron Cruickshank vs. Damien Brown (Lightweight)
Mika Nagano vs. Miyuu Yamamoto (Atomweight)
Kazuyuki Miyata vs. Erson Yamamoto (Featherweight)
Yusuke Yachi vs. Johnny Case (Lightweight)
Yuki Motoya vs. Justin Scoggins (Catchweight)
Ulka Sasaki vs. Manel Kape (Flyweight)
Shinju Nozawa Auclair vs. Justyna Haba (Catchweight)
Nobumitsu Tyson vs. Tofiq Musayev (Lightweight)
Rena vs. Samantha Jean Francois (Atomweight)

Rizin Heisei’s Last Yarennoka, Tokyo, December 31st (morning)
Tatsuya Kawajiri vs. Satoru Kitaoka (Lightweight)
Takeshi Inoue vs. Mikuru Asakura (Catchweight)
Kana Watanabe vs. Shizuka Sugiyama (Atomweight)
Kai Asakura vs. Je Hoon Moon (Bantamweight)
Kickboxing: Yuta Uchida vs. Takuma Konishi (Light Heavyweight)
Special rules: Nanaka Kawamura vs. Ai (Catchweight)