Cage Force

On March 12, 2005, the first event of D.O.G. held at Differ Ariake in Tokyo, Japan.[3] Yushin Okami defeated Brian "Tattoo" Foster by Submission at Main event.

On June 11, 2005, Second event "D.O.G. 2" held.[4] Yushin Okami defeated Nick Thompson by Thompson's Elbow Injury at 29 seconds of the 1st round. Hidetaka Monma defeated Dave Strasser by KO of the 1st round.

On September 28, 2006, GCM Communication announced the inauguration of "World Wide Cage Network (WWCN)" meaning cooperation with five MMA organizations in the world. GCM Communication changed name to "Cage Force (Named by Caol Uno)" from the "D.O.G.".[2] and Cage Force held On November 25, 2006.

On 2007,Cage Forece held the lightweight and Welterweight tournament. Artur Oumakhanov defeated Kotetsu Boku via Split Decision and Won Cage Force lightweight Championship. Yoshiyuki Yoshida defeated Dan Hardy via DQ and Won Cage Force Welterweight Championship. Yoshida contracted with the UFC, but Oumakhanov could not contract with the UFC because he lost to Andre Amade at Hero's During the tournament.[5]

On 2008,Cage Forece held the Featherweight and Bantamweight tournament. Yuji Hoshino defeated Akiyo Nishiura via Unanimous Decision and Won Cage Force Featherweight Championship. Takeya Mizugaki defeated Masahiro Oishi by TKO and Won Cage Force Bantamweight Championship.[6] Mizugaki contracted with the WEC and fought Miguel Torres for the WEC Bantamweight Championship of WEC 40 on April 5, 2009.

On September 27, 2008, Valkyrie was established and the first event was promoted In the first part of "Cage Force EX" on November 8, 2008.[7]

On November 11, 2011, Wajyutsu Keisyukai announced the inauguration of new players association. and They Separated from the GCM Communication because virtually cessation of activity by GCM.[8] Cage Force was Virtually completed in the last event "Cage Force 20" on November 28, 2010.[9]

Weight limit: 77 kg (169.8 lb; 12.1 st)

No.	Name	Event	Date	Defenses
1	Yoshiyuki Yoshida def. Dan Hardy	Cage Force 5: Ariake, Tokyo, Japan	December 1, 2007
Yoshida vacated the title when he left Cage Force for the UFC.

Weight limit: 70 kg (154.3 lb; 11.0 st)

No.	Name	Event	Date	Defenses
1	Artur Oumakhanov def. Kotetsu Boku	Cage Force 5: Ariake, Tokyo, Japan	December 1, 2007
Oumakhanov vactated the title when he left Cage Force for the Dream.
2	Mizuto Hirota def. Tomonari Kanomata	Cage Force 6: Ariake, Tokyo, Japan	April 5, 2008	1. draw. Katsuya Inoue at Cage Force EX Eastern Bound on February 28, 2009
Hirota vactated the title when he left Cage Force for the Sengoku.
3	Kuniyoshi Hironaka def. Yoshihiro Koyama	Cage Force 12: Ariake, Tokyo, Japan	September 12, 2009

Weight limit: 65 kg (143.3 lb; 10.2 st)

No.	Name	Event	Date	Defenses
1	Yuji Hoshino def. Akiyo Nishiura	Cage Force 9 Ariake, Tokyo, Japan	December 6, 2008

Weight limit: 60 kg (132.3 lb; 9.4 st)

No.	Name	Event	Date	Defenses
1	Takeya Mizugaki def. Masahiro Oishi	Cage Force 9 Ariake, Tokyo, Japan	December 6, 2008
Mizugaki vacated the title when he left Cage Force for the WEC.

Quarterfinals

Semifinals

Final

Takeya Mizugaki

KO

Daichi Fujiwara

1

Takeya Mizugaki

BYE[1]

Taiyo Nakahara

TKO

Ryota Uozumi

2

Takeya Mizugaki

TKO

Masahiro Oishi

2

Tetsu Suzuki

TKO

Katsuya Toida

1

Tetsu Suzuki

DEC

Masahiro Oishi

3

Masahiro Oishi

TKO

Paul McVeigh

2

^ 1: Taiyo Nakahara was set to face Takeya Mizugaki in the semifinal round of the Bantamweight tournament. However, Nakahara had to withdraw due to an injury and Mizugaki was given a bye into the Final round.