 # | Title | Timeframe | Winner | Rating | Votes |
| 1 | New Year's Makenokori Majiten Tournament | 05.01.2025 | Rina Yamashita | ||
| 2 | OZ Academy Openweight Title #1 Contendership Tournament | 06.01.2019 - 17.03.2019 | Mayumi Ozaki | ||
| 3 | OZ Academy Openweight Title #1 Contendership Tournament | 10.06.2012 | Hiroyo Matsumoto | ||
| 4 | OZ Academy Openweight Title #1 Contendership League | 11.09.2008 - 14.12.2008 | Mayumi Ozaki | ||
| 5 | OZ Academy Openweight Title #1 Contendership Tournament | 08.10.2007 - 16.12.2007 | Carlos Amano | ||
| 6 | OZ Academy Openweight Title League | 17.11.2006 - 10.03.2007 | Aja Kong | ||
| 7 | 3.000 Dollar Round Robin Tournament | 12.08.2006 | Chikayo Nagashima | ||
| 8 | Iron Woman Tournament | 08.08.2004 | Carlos Amano | ||
| 9 | Iron Woman Tag Team Tournament | 08.08.2004 | Amazing Kong & Chikayo Nagashima | ||
| 10 | Summer Jumbo Tag Tournament | 31.08.2003 | Eagle Sawai & Shinobu Kandori |
