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UFC 131: Dos Santos vs. Carwin is an upcoming mixed martial arts event to be held by the Ultimate Fighting Championship on June 11, 2011 at the Rogers Arena in Vancouver, British Columbia.

Main Card

Heavyweight bout: Brazil Junior dos Santos vs. United States Shane Carwin
Featherweight bout: United States Kenny Florian vs. Brazil Diego Nunes
Heavyweight bout: Norway Jon Olav Einemo vs. United States Dave Herman
Middleweight bout: Brazil Demian Maia vs. United States Mark Muñoz
Lightweight bout: United States Donald Cerrone vs. Brazil Vagner Rocha

Spike TV Card

Lightweight bout: Canada Sam Stout vs. The Bahamas Yves Edwards
Middleweight bout: Canada Jesse Bongfeldt vs. United States Chris Weidman

Preliminary Card (Facebook/Youtube)

Light Heavyweight bout: Poland Krzysztof Soszynski vs. United States Mike Massenzio
Middleweight bout: Canada Nick Ring vs. United States James Head
Featherweight bout: United States Dustin Poirier vs. England Jason Young
Heavyweight bout: United States Joey Beltran vs. United States Aaron Rosa
Featherweight bout: Japan Michihiro Omigawa vs. United States Darren Elkins


Background

A bout between Junior dos Santos and Shane Carwin will headline the event. The winner of the fight is expected to face off against current UFC Heavyweight Champion Cain Velasquez. Brock Lesnar was scheduled to fight Dos Santos after their coaching stint on The Ultimate Fighter 13, but due to a recurrence of diverticulitis, had to back out of the fight and was quickly replaced by Carwin.[4] Originally, a matchup between Carwin and Jon Olav Einemo was scheduled for this event. Einemo will remain on the card and now be fighting Dave Herman, who was pulled from a matchup with Joey Beltran as a result. Beltran will now be matched up against Aaron Rosa.

Court McGee was scheduled to fight Jesse Bongfeldt, but was forced to pull out due to a torn MCL while training with the Cesar Gracie’s camp. Chris Weidman is set to step in as McGee's replacement.

Rani Yahya was scheduled to take on Dustin Poirier at this event, but withdrew due to injury on May 3, 2011. Jason Young has stepped in as Yahya's replacement.

Anthony Perosh was expected to face Krzysztof Soszynski at this event, but Perosh was forced from the bout with an injury and replaced by Igor Pokrajac.

On May 17, a torn muscle forced Mac Danzig out of his bout with Donald Cerrone. Promotional newcomer Vagner Rocha is set to replace Danzig.

UFC newcomer Dave Herman was originally slated to face Rob Broughton at this event, but Broughton was later replaced by Joey Beltran, who was later replaced with Jon Olav Einemo since Carwin replaced an injured Lesnar.

UFC 131 will feature two preliminary fights live on Spike TV but it is not yet known which two will be broadcast.


-may 8 updated fightcard and added new poster
-may 11 updated fightcard and background
-may 12 updated main event and removed poster
-may 24 updated fightcard and background plus added new poster
-may 30 updated fightcard
-june 6 updated fightcard - massenzio replaces pokrajac

-may 8 updated fightcard and added new poster
-may 11 updated fightcard and background
-may 24 updated fightcard and background plus added new poster
-may 30 updated fightcard

Light-heavyweight Krzysztof Soszynski has had a change of opponent -- again -- for his UFC 131 bout in Vancouver this Saturday. UFC veteran Mike Massenzio has verbally agreed to take the bout against Soszynski just six days out from the June 11 event, Dana White announced today.

Originally slated to fight Anthony Perosh, who suffered an injury, Soszynski was then expected to fight Igor Pokrajac, who also suffered an injury that forced him to cancel.


source: http://au.ufc.com/news/ufc-131-fight-card-updates

MAIN CARD (pay-per-view)
Junior Dos Santos (239) vs. Shane Carwin (254)
Kenny Florian (146) vs. Diego Nunes (145)
Demian Maia (186) vs. Mark Munoz (186)
Jon Olav Einemo (261) vs. Dave Herman (233)
Donald Cerrone (155) vs. Vagner Rocha (155)

PRELIMINARY CARD (Spike TV)
Yves Edwards (155) vs. Sam Stout (155)
Jesse Bongfeldt (185) vs. Chris Weidman (186)

PRELIMINARY CARD (Facebook/Youtube)
Mike Massenzio (201) vs. Krzysztof Soszynski (205)
James Head (186) vs. Nick Ring (185)
Dustin Poirier (146) vs. Jason Young (145)
Joey Beltran (247) vs. Aaron Rosa (261)
Darren Elkins (145) vs. Michihiro Omigawa (145)