FanHouse Melvin Guillard

Former Ultimate Fighter winner Nate Diaz snapped a two-fight losing streak inside the Octagon Wednesday at UFC Fight Night 19, beating Melvin Guillard with a second-round guillotine choke in the main event of a solid night of MMA.

Guillard dropped Diaz with a brutal right hand just seconds into the fight, but he didn't want to go to the ground with Diaz, a Brazilian jiu jitsu black belt, and so he allowed Diaz to recover and stand back up.

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Nate Diaz was the only fighter to miss the mark on his first weigh-in attempt but had extra time to cut the weight and make official his lightweight bout against Melvin Guillard for Wednesday's UFC Fight Night 19 in Oklahoma City.

Diaz initially stepped off the scales at 156.5 pounds, which is half-a-pound over the one-pound allowance, but his second try allowed him time to cut down to 156. Guillard weighed in without needing any allowance at 155 pounds.

The word out of Diaz's camp coming into the weigh-ins was that Diaz was having difficulty getting down to lightweight and hinted at a move to welterweight after this fight.

All 22 fighters will step on the scales Tuesday afternoon at the Cox Convention Center in Oklahoma City for the UFC Fight Night: Diaz vs. Guillard weigh-in, and if you can't be there in Oklahoma, you can watch it right here at FanHouse.

The big question is whether Nate Diaz, who fights Melvin Guillard in the main event, will have any trouble making the lightweight limit of 155 pounds. Diaz's camp has indicated that he might have a hard time making weight.

Will Diaz make weight? Will everyone else? Find out by watching the weigh-in video below, starting at 5 PM ET on Tuesday.

Melvin Guillard in recent years has put his fight career in jeopardy with a positive cocaine test, a controlled substance charge and a probation violation, which have led to jail time and an eight-month suspension, but it wasn't until the five-month stint in rehab late last year that handed him his wake-up call.

"The turning point for me was when I had to sit in a rehab – which to me which was jail – I had to sit there for six months," Guillard said Monday in a conference call. "Those six months gave me time to miss my family. I missed my wife. I missed the sport.

The UFC has added one more bout to UFC Fight Night 19, the UFC debut of former Sportfight champion Mike Pierce against former WEC welterweight title contender Brock Larson (pictured, right).

The event, co-headlined by Nate Diaz vs. Melvin Guillard and Gray Maynard vs. Roger Huerta, emanates from the Cox Convention Center in Oklahoma City on Sept. 16 and will air as the lead-in on Spike TV to the season premiere of The Ultimate Fighter: Heavyweights.

Ten bouts have now been official to finalize the UFC Fight Night 19 card scheduled for Sept. 16 at the Cox Convention Center in Oklahoma City.

In the evening's headliner, The Ultimate Fighter 5 winner Nate Diaz will look to avoid three straight losses in a lightweight showdown against season two's Melvin Guillard.

UFC 101 UPDATE (8/9/09): B.J. Penn Beats Kenny Florian by 4th-Round Submission

The main event for UFC 101 has been set, and lightweight champion BJ Penn will defend his title against Kenny Florian on August 8 in Philadelphia.

MMA Weekly reports that Penn said on his own web site that it's official, and that Penn will make his first title defense since May of 2008. Lately Penn has seemed to be obsessed with getting justice for what he perceives as cheating by Georges St. Pierre during their fight at UFC 94, but now Penn says he's ready to turn all his attention to facing Florian.