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Two weeks ago, Jeff Monson and Roy Nelson were fighting each other in Florida at the March Badness show. This weekend in Japan, Monson was fighting again -- and he had Nelson in his corner.

Former IFL heavyweight champion Roy Nelson lost a hard-fought unanimous decision to former UFC No. 1 contender Jeff Monson Saturday night at the March Badness event in Florida.

Roy Nelson is an MMA fighter with a 13-3 record, but to look at him, you'd never believe he was a professional athlete. So as I interviewed Nelson about his preparation for his upcoming fight with Jeff Monson in Saturday's "March Badness" event, the first thing I wanted to ask him about is his weight.

The full interview is below.

The steroid suspension of Ken Shamrock forced the promoters of the upcoming "March Badness" boxing/MMA event to find a new opponent for the former pro wrestler Bobby Lashley. That opponent, it has now been reported, is Jason Guida.

Ariel Helwani of Versus.com reports that Guida vs. Lashley will take place on the undercard of a night of fights that also includes Roy Nelson vs. Jeff Monson in MMA and the return of Roy Jones to the boxing ring, to face Omar Sheika.

Roy Jones Jr. will return to the ring on March 21 to take on the little-known Omar Sheika in a card that he's promoting himself, with mixed martial arts fights featuring Seth Petruzelli and Bobby Lashley on the undercard.

Combining boxing and MMA has been tried before, although never in a card featuring a fighter as well known as Jones. And although neither Petruzelli nor Lashley is anywhere close to being a great MMA fighter, they're both well known: Petruzelli beat Kimbo Slice on national television in October, while Lashley was once among the most popular pro wrestlers in the WWE. Another MMA fight on the card is supposed to match Roy Nelson against Jeff Monson, although Monson's legal problems could make that difficult.

Yesterday I wrote that MMA referee Jorge Ortiz should explain his decision to stand up Roy Nelson in his fight with Andrei Arlovski on Saturday night, and that I had been unsuccessful in my attempts to contact Ortiz to get an explanation.

Today the Florida Department of Business and Professional Regulation, which licenses Ortiz and all referees in the state, provided me with his phone number, and Ortiz answered my questions about the decision-making process that went into the stand-up, which came with 2:22 remaining in the first round, while Nelson had side control.

There's a scandal stemming from an official telling a fighter to stand up during Saturday night's EliteXC show, and MMA fans deserve answers.

No, I'm not talking about the claims from Seth Petruzelli that an EliteXC official paid him extra cash to stand up in his fight against Kimbo Slice. I'm talking about referee Jorge Ortiz ordering Roy Nelson to stand up when he had side control on the ground against Andrei Arlovski.

Watch the fight, and you'll see that Nelson got side control with 3:01 remaining in the first round, and he looked like he was in great position to dominate the rest of the round and maybe pull the upset. But it didn't happen, because Ortiz stood them up with 2:22 remaining in the round.

Although Kimbo Slice showed on Saturday night that he has no business in a mixed martial arts cage, I hope that doesn't mean the end of EliteXC on CBS. The four televised undercard fights demonstrated that MMA does belong on network television.

Benji Radach came out swinging against Murilo "Ninja" Rua and earned a TKO halfway through the second round. Radach has been around a while, but that was the best win of his career. I loved the way he controlled the tempo.

Gina Carano showed, indisputably, that she's a real fighter with a dominant unanimous decision over Kelly Kobold. If EliteXC has another show on CBS, I hope Carano vs. Cris Cyborg is the main event.

Former UFC heavyweight champion Andrei Arlovski knocked out former IFL heavyweight champion Roy Nelson with a brutal right hook tonight on the EliteXC: Heat card in Florida.

The fight went to the ground early, with the 260-pound Nelson on top and getting control but not doing a lot of damage, before the ref stood them up halfway through the round. Nelson then pushed Arlovski against the cage and held him there, while Arlovski tried to land a couple of punches and knees. It was a close first round in which neither fighter was a clear winner.

But in the second round, Arlovski showed that he's clearly the superior fighter, landing a series of knees and strikes before finally knocking Nelson out with a big right hand at the 3:14 mark.

It's the fight card that could determine the future of EliteXC and maybe even the future of mixed martial arts on network television. EliteXC: Heat is just a day away, and although the main event is Kimbo Slice trying to knock out a washed-up legend, I'll be tuning in more for the four undercard matches. Here are the details:

What: EliteXC: Heat

Who: In addition to the Kimbo vs. Ken Shamrock main event, the card also features Gina Carano vs. Kelly Kobold, Andrei Arlovski vs. Roy Nelson, Jake Shields vs. Paul Daley and Murilo "Ninja" Rua vs. Benji Radach.

When: Saturday, 9 p.m. ET

Where: Bank Atlantic Center, Sunrise, Florida

How: Watch for free on CBS

Predictions after the jump.