UFC 116 features a marquee matchup between Brock Lesnar and Shane Carwin

In addition to the FIFA World Cup, sports bettors are hoping to cash in big with Lenar vs. Carwin.

What is considered the "slow season" for North American facing online sports betting websites is anything but that this year with the World Cup and now Lesnar vs. Carwin.

Odds on this fight were practically even with Lesnar only a slight -140 favorite.

Shane Carwin won the interim heavyweight championship by defeating Frank Mir at UFC 111.  Lesnar is the current heavyweight champion.

Lesnar vs. Carwin goes off Saturday night July 3, 2010 at the MGM Grand Garden Arena in Las Vegas.

If Carwin touches Lesnar on the chin hard enough, this fight could be over in a flash. Carwin has the power to finish any man, even an imposing figure like Lesnar, according to ESPN.com.

"If I touch anybody with my hands, I can knock them out," Carwin said recently during a conference call.

"Shane poses some different threats that I haven't had to face before, the size and strength and the wrestling," said Lesnar, who is 4-1-0. "[Shane's] got knockout power, so we train to avoid it.

"Obviously there are things that we want to do, and there's things that we want to avoid."

Lesnar had to pull out of a previously scheduled fight against Carwin in November 2009 due to a case of life-threatening diverticulitis.