Carwin video: Sadistic big man beats the snot out of his trainer

The proof is on video. Shane Carwin is thinner, but still packs a wallop. The former UFC interim heavyweight champ closes out his camp with an odd ritual. His trainer Trevor Wittman puts on a massive chest pad and allows Carwin to drill him all over the gym. Wittman wilts on the final liver shot.

Carwin looks great. Now all he needs is for Junior dos Santos to be stationary on Saturday night and give him free shots.

You can watch UFC 131 right here on Yahoo! Sports

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MMA Marketplace: UFC 131 Walkout shirts for Carwin and ‘Cigano’

With UFC 131 just around the corner, it's time to take a look at the walkout shirts from the headlining heavyweights, Junior "Cigano" dos Santos and Shane Carwin.

Bad Boy's shirt for dos Santos comes in the familiar colors of the Brazilian flag, but have a bit of late-80s, Miami Vice, wearing-linen-suits-with-pastel-t-shirts-and-loafers-with-no-socks-vibe. Hopefully, Junior's cornermen will follow and dress like Crockett and Tubbs for Saturday night. Buy Junior's shirt for the slightly overpriced $39.99.

Carwin took a more cerebral, inspirational approach with his shirt, incorporating symbols that refer to war and engineering (his other job) as well as quote from "The Aeneid" by Roman poet Virgil. He even did a head nod to the fight taking place in Vancouver by using the Canadian spelling of "favours," though he could have bridged the differences by using the original Latin of "Audaces fortuna iuvat." (Ed. note -- I knew that taking Latin in high school would pay off some day!) Buy Carwin's shirt for $31.99.

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UFC 131 odds update: Over or under on Carwin-JDS lasting two rounds?

Two hard-hitting rhinos collide tonight in Vancouver when Shane Carwin and Junior dos Santos lock horns at UFC 131. Both fighters say they're willing to trade shots. If that's the case, is there any chance this main event/title eliminator makes it to the third round?

Las Vegas sportsbooks tabbed JDS a good-sized favorite and the betting public has backed the Brazilian. Dos Santos is now a minus-200 choice. There's intrigue around the round proposition bet. The over/under for the fight is one and half rounds with the under checking in as a strong favorite at minus-160.

Adam Hill joined me on "The MMA Insiders" show on ESPNRadio1100 in Las Vegas to give our selections on many of the fights at UFC 131.

The biggest moves on the card have come with Krzysztof Soszysnki, Vagner Rocha and Jon Olav Einemo.

Soszynski, a big light heavyweight, is fighting a last minute replacement in Mike Massenzio. The former college wrestler normally fights down at middleweight and only weighed in at 201 pounds for this 205-pound bout. Soszynski has steamed from minus-240 to minus-400. Bettors are either impressed with Jon Olav Einemo's jiu-jitsu resume or his pure size. His opponent Dave Herman has been bet down from minus-270 to minus-200. During the week, Donald Cerrone was a huge 5-to-1 favorite over Rocha. Bettors looking for some value have sided with Vagner Rocha, who is now down to plus-300.

Round prop bets:

Carwin Rnd 1 - 3/1
Carwin Rnd 2 - 6/1
Carwin Rnd 3 - 15/1
Carwin Dec. - 8/1
Santos Rnd 1- 9/5
Santos Rnd 2 - 5/2
Santos Rnd 3 - 7/1
Santos Dec. - 6/1
Draw 25/1

UFC 131 betting odds (Courtesy Venetian Las Vegas):

Shane Carwin (+170) vs. Junior dos Santos (-200) - Heavyweight

Diego Nunes (+220) vs. Kenny Florian (-300) - Lightweight

Vagner Rocha (+300) vs. Donald Cerrone (-400) - Lightweight

Jon Olav Einemo (+170) vs. Dave Herman (-200) - Heavyweight

Mark Munoz (-125) vs. Demian Maia (-105) - Middleweight

Yves Edwards (+130) vs. Sam Stout (-160) - Lightweight

Jesse Bongfeldt (+300) vs. Chris Weidman (-400) - Middleweight

Jason Young (+250) vs. Dustin Poirier (-350) - Featherweight

Mike Massenzio (+300) vs. Krzysztof Soszynski (-400) - Light heavyweight

James Head (+105) vs. Nick Ring (-135) - Middleweight

Joey Beltran (+110) vs. Aaron Rosa (-140) - Heavyweight

Darren Elkins (+210) vs. Michihiro Omigawa (-260) - Featherweight

You can watch UFC 131 right here on Yahoo! Sports

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