Sengoku middleweight champion Jorge Santiago took on Mamed Khalidov Sunday in the main event of Sengoku Raiden Championships 12 in Tokyo, Japan. Akihiro Gono vs. Diego Gonzalez co-headlined the event, while Maximo Blanco and Marlos Sandro were also featured.

Because the event doesn’t air in North America until Friday, March 12, on HDNet, the Sengoku 12 results are after the jump.

Veteran Yves Edwards (37-15-1) earned his third-straight victory with a first-round technical knockout of Derrick Noble (25-13-1) on Friday in the main event of “MFC 24: Heat XC” in Enoch, Alberta, Canada. Tom Watson, Dwayne Lewis, and Jesse Juarez also scored stoppages on the MFC 24 main card.

Favorite Sarah Kaufman easily earned a unanimous decision over an outmatched Takayo Hashi in the main event of Strikeforce Challengers 6 on Friday in San Jose, California to become the promotion’s first-ever women’s welterweight champion.

Trevor Prangley and Karl Amoussou fought to a technical draw in the co-headliner after an accidental eye poke ended the fight in the first round, while Luke Rockhold, Tarec Saffiedine, and Yancy Medeiros also won.

Thales Leites, Glover Teixeira, and Danillo Villefort were among the notable winners at Thursday’s Bitetti Combat 6 event in Brasilia, Brazil, while Paulo Filho, the former WEC middleweight champ who has been plagued by personal problems, ultimately withdrew from the event.

King of the Cage made its HDNet debut on Friday with “KOTC: Vengeance” in New Mexico, with heavyweight Mike Kyle knocking out fellow veteran Travis Wiuff with a last-second punch in the second round of the main event. Also on the card Donald Sanchez, Tony Lopez, and Abel Cullum retained their respective titles, while Quinn Mulhern spoiled UFC veteran Rich Clementi’s debut.

Bellator middleweight champion Hector Lombard, UFC veteran Josh Neer, and Jesse Taylor were among the notable winners in recent MMA action, while other notables, including Jorge Masvidal, Junie Browning, and Jason Day, dropped their most-recent bouts.

In the first-ever matchup between UFC hall of famers, Randy Couture dominated Mark Coleman before finishing him with a second-round submission in the main event of “UFC 109: Relentless” on Saturday at the Mandalay Bay Events Center in Las Vegas.

In the UFC 109 co-main event, Chael Sonnen earned the next middleweight title shot by upsetting fellow contender Nate Marquardt, surviving a deep gash and a frantic final minute to earn a unanimous decision victory fueled by dominant wrestling and ground and pound.

Former UFC fighter Houston Alexander returned to action on Saturday in the main event 5150 Combat’s “New Year’s Revolution” in Tulsa, Oklahoma, fighting for the first time since his December loss to Kimbo Slice, suffering a second-round TKO at the hands of up-and-comer Joey Beltran.

The card also featured wins by UFC veterans Jeff Monson, Rich Clementi, Tim Boetsch, and Jeremy Horn.

Lightweight contender Gray Maynard avenged the only loss of his MMA career on Monday, edging TUF 5 winner Nate Diaz by split decision in the main event of The Ultimate Fighter 20 at the Patriot Center in Fairfax, Virginia.

Also on the UFC Fight Night 20 main card, Evan Dunham upset TUF 9 winner Efrain Escudero with a third-round submission, Aaron Simpson came from behind to edge Tom Lawlor in a controversial split decision, and TUF 7 winner Amir Sadollah dominated Brad Blackburn en route to a unanimous decision win.

Hidehiko Yoshida ruined the anticipated debut of fellow Olympic Judo gold medalist Satoshi Ishii, topping the MMA newcomer by unanimous decision in MMA main event of Thursday’s 18-bout “Dynamite!! 2009″ event at the Saitama Super Arena in Saitama, Japan.

In other notable MMA action, Shinya Aoki broke Mizuto Hirota’s arm for an opening-round submission win, Ikuhisa Minowa upset Rameau Thierry Sokoudjou with a third-round TKO to win DREAM’s “Super Hulk” tourney and Gegard Mousasi and Alistair Overeem each earned first-round knockouts.

It wasn’t pretty, but lightweight contender Donald Cerrone managed to remain in title contention on Saturday, putting two early point deductions for lows blows behind him by choking out Ed Ratcliff midway through the third and final round of the WEC 45 main event at The Pearl at The Palms in Las Vegas.

Lightweight Anthony Nkojuani and bantamweight Joseph Benavidez remained in the hunt in their respective divisions by scoring first-round knockouts on the Versus-televised WEC 45 main card.

Former middleweight champion Cung Le dominated Scott Smith early in their “Strikeforce: Evoltion” headliner on Saturday, but the slugger Smith came from behind to score a third-round knockout of the returning Le to cap off the Showtime-televised event at the HP Pavilion in San Jose, California.

In a “Fight of the Year” contender, interim title-holder Gilbert Melendez again became the undisputed Strikeforce lightweight champion by edging Josh Thomson by unanimous decision in an exciting brawl that co-headlined the card.

UFC lightweight champion BJ Penn dominated challenger Diego Sanchez from start to finish on Saturday in the main event of UFC 107 in Memphis, Tennessee, dropping Sanchez in the opening seconds of the fight and bludgeoning him with superior boxing throughout the bout before ultimately opening up a fight-ending gash in the fifth round to retain the 155-pound title.

Frank Mir, Kenny Florian, Jon Fitch, and Stefan Struve also picked up wins on the UFC 107 main card.

Roy Nelson won The Ultimate Fighter 10 heavyweight tournament on Saturday by knocking out fellow finalist Brendan Schaub in the opening round at The Ultimate Fighter 10 Finale, which took place at The Pearl at The Palms in Las Vegas and aired live on Spike TV.

Jon Jones dominated Matt Hamill with vicious ground and pound in the card’s co-headliner, but suffered a disqualification loss due to illegal elbows, while Kimbo Slice made his UFC debut with a lackluster unanimous decision over Houston Alexander.

K-1’s World Grand Prix 2009 Final took place earlier today at the Yokohama Arena in Yokohama, Japan, with Semmy Schilt defeating Badr Hari via first-round TKO for his record-tying fourth K-1 World Grand Prix Championship.

Schilt defeated Jerome LeBanner, Remy Bonjasky, and Hari en route to winning the title, while Hari earned wins over Ruslan Karaev and Alistair Overeem to advance to the finals before losing to Schilt and becoming the runner-up for the second-straight year.