Jewels 12th Ring

Jewels 12th Ring was a planned mixed martial arts (MMA) to be held by MMA promotion Jewels. The event was planned to be held on March 11, 2011 at Shinjuku Face in Kabukicho, Tokyo, Japan but it was cancelled a few hours before the start due to the 2011 Tōhoku earthquake and tsunami.

Background
The first two bouts of the event were disclosed on February 8, 2011. Four more bouts were announced on February 17, 2011, including the addition of American fighter Lisa Ellis as an opponent for Jewels lightweight champion Ayaka Hamasaki in a special rules non-title bout. The rest of the card was revealed on March 3, 2011, which included the debut in MMA of South Korean boxer Ji Yun Kim and a kickboxing match. It was announced the next day that Ellis had suffered an injury in training and that fellow Bellator season three semi-finalist Jessica Aguilar would face Hamasaki instead.

The weigh-ins took place on March 10, 2011, with American fighter Danielle West missing weight and being penalized with a red card (point deduction) in her bout against Mongolian Esui. Fighters Sakura Nomura and Kim did not take part in the weigh-ins and instead were going to be weighed on the day of their match.

Announced card
🇯🇵 Miyoko Kusaka (50.0 kg, Grabaka Gym) vs. 🇯🇵 Yuka Okumura (49.5 kg, Soul Fighters Japan)
 * 1st match: Jewels official rules -50 kg bout, 5:00 / 2 R

🇯🇵 Rina Tomita (51.8 kg, AACC) vs. 🇯🇵 Sadae Suzumura (51.9 kg, Cobra Kai MMA Dojo)
 * 2nd match: Jewels official rules lightweight bout, 5:00 / 2 R

Esui (64.6 kg, Smash Alley Gym) vs. 🇺🇸 Danielle West (66.0 kg, Fuzion MMA)
 * 3rd match: Jewels special rules (pound allowed) -65 kg bout, 5:00 / 2 R

🇯🇵 Miku Hayashi (52.1 kg, Bungeling Bay Spirit) vs. 🇯🇵 Suzuna Nakamura (51.7 kg, Sakigake Juku)
 * 4th match: Jewels kickboxing rules -52.16 kg bout, 5:00 / 2 R

🇯🇵 Shizuka Sugiyama (62.0 kg, Zendokai Yokohama) vs. 🇯🇵 Mayumi Aoki (61.7 kg, Gamurannac)
 * 5th match: Jewels official rules -62 kg bout, 5:00 / 2 R

🇯🇵 Sakura Nomura (Club Barbarian Impact) vs. 🇰🇷 Ji Yun Kim (CMA Korea Team Posse)
 * 6th match: Jewels official rules -58 kg bout, 5:00 / 2 R

🇯🇵 Mika Nagano (53.9 kg, Core) vs. 🇯🇵 Emi Murata (53.6 kg, AACC)
 * 7th match: Jewels official rules -54 kg bout, 5:00 / 2 R

🇯🇵 Ayaka Hamasaki (52.0 kg, AACC) vs. 🇺🇸 Jessica Aguilar (American Top Team)
 * 8th match: Jewels special rules (pound allowed) lightweight bout, 5:00 / 2 R