| Datum | Země | Název, adresa | Pořadatel |
|---|---|---|---|
| 28.5.2011 |  | 100% Fight - 100 Percent Fight 5 Halle Carpentier, Paris, France, France | 100&37; Fight |
| 28.5.2011 |  | 2TM - 2 the Maxx Marsdijk Hall, Assen, Drenthe, Netherlands | 2 the Maxx |
| 28.5.2011 |  | 808 - Battleground Aloha Tower, Honolulu, Hawaii, United States | 808 Battleground |
| 28.5.2011 | | ACFC - American Cage Fighting Championships Coon Rapids, Iowa, United States, United States | American Cage Fighting Championships |
| 28.5.2011 |  | BFL 8 - Battlefield Fight League: Island Beatdown Frank Crane Arena, Nanaimo, British Columbia, Canada | Battlefield Fight League |
| 28.5.2011 |  | CFC - Cruz Fight Championship 2 Cruz das Almas Sports Club Gymnasium, Cruz das Almas, Bahia, Brazil | Cruz Fight Championship |
| 28.5.2011 | | Colorado MMA 3 - Independence North 2nd Street, Montrose, Colorado, United States | Colorado MMA |
| 28.5.2011 |  | Combat Challenge Serbia - Combat Challenge 2 Pancevo, South Banat, Serbia, Serbia | Combat Challenge Serbia |
| 28.5.2011 |  | CW 7 - Clan Wars Ulster Hall, Belfast, Antrim, Ireland | Clan Wars |
| 28.5.2011 | | CWFC 42 - Cage Warriors Fighting Championship 42 Neptune Stadium, Cork City, Ireland, Ireland | Cage Warriors |
| 28.5.2011 |  | Days of Glory - Fight Night Gold Coast Conference and Exhibition Center, Broadbeach, Queensland, Australia | Days of Glory |
| 28.5.2011 | | EAC - Extreme Adrenaline Championships 117 Columbus Road, Fredericktown, Ohio, United States | Extreme Adrenaline Championships |
| 28.5.2011 | | East Peoria Throwdown - Round 8 East Peoria Events Center, East Peoria, Illinois, United States | East Peoria Throwdown |
| 28.5.2011 | | FA - Fatality Arena 3 Canto do Rio Football Club Gymnasium, Niteroi, Rio de Janeiro, Brazil | Fatality Arena |
| 28.5.2011 |  | FEFoMP - Open Championship of Vladivostok State Circus, Vladivostok, Russia, Russia | Modern Fighting Pankration |
| 28.5.2011 | | FNITC - Fight Night in the Cage 2 Lancaster Host Resort, Lancaster, Pennsylvania, United States | Fight Night in the Cage |
| 28.5.2011 | | HRMMA - Hardrock MMA 34 Sloan Convention Center, Campbellsville, Kentucky, United States | Hardrock MMA |
| 28.5.2011 |  | LFN - Resurrection Mellringe Hall, Orebro, Narke, Sweden | Live Fight Night |
| 28.5.2011 |  | Next Japan - Gekitotsu in Kagoshima Aira Gymnasium, Kagoshima, Japan, Japan | Next Japan |
| 28.5.2011 | | NXFC 3 - Nemesis Nipawin Evergreen Centre, Nipawin, Saskatchewan Canada, Canada | Northern Xtreme Fighting Championship |
| 28.5.2011 | | PFC - Prestige Fighting Championship 2 Casman Centre, Fort McMurray, Alberta, Canada | Prestige Fighting Championship |
| 28.5.2011 |  | RFC - Real FC 1 Injoy, Hagen, North Rhine-Westphalia, Germany | Real FC |
| 28.5.2011 | | RFN - Rositzer Fightnight Kulturhaus, Rositz, Germany, Germany | Rositzer Fightnight |
| 28.5.2011 | | Saturday Night Fights - Round 3 Turvey Centre, Regina, Saskatchewan, Canada | Saturday Night Fights (Canada) |
| 28.5.2011 | | Shooto - Gig Tokyo 6 Shinjuku Face, Tokyo, Japan, Japan | Shooto |
| 28.5.2011 |  | SMMAC - Syena MMA Championship 2 Syena Martial Arts Centre, Jakarta, Indonesia, Indonesia | Syena MMA Championship |
| 28.5.2011 |  | TFC 1 - Total Fight Championship 1 Jalisco Arena, Guadalajara, Jalisco, Mexico | Total Fight Championship |
| 28.5.2011 | | UCC - Revolution 777 Hollywood Blvd, Lawrenceburg, Indiana, United States | Universal Cage Combat |
| 28.5.2011 | | UFC 130 - Rampage vs. Hamill MGM Grand Garden Arena, Las Vegas, Nevada, United States | UFC - Ultimate Fighting Championship |
| 28.5.2011 | | United Glory - 2010-2011 World Series Finals Moscow Forum Hall, Moscow, Russia, Russia | Glory |
| 28.5.2011 | | USACA - Legacy Amateur Series 3 House of Blues, Dallas, Texas, United States | United States Amateur Combat Association |