UFC 162: Frankie Edgar vs Charles Oliveira, Cub Swanson vs Dennis Siver featherweight fights booked for Las Vegas

It appears that not all Ultimate Fighting Championship (UFC) fighters can coordinate their own mixed martial arts (MMA) match ups.

Former UFC Lightweight champion Frankie Edgar appeared to be on a collision course with resurgent Featherweight contender Cub Swanson after the former dropped a decision to 145-pound champion Jose Aldo at UFC 156 in Feb. 2012 in his divisional debut.

Despite the online chit-chat, it appears that Swanson -- who is riding a four-fight win streak -- perhaps desired an opponent, Dennis Siver -- himself riding back-to-back victories -- who had been more successful recently inside the Octagon.

Tonight (March 27, 2013) the promotion announced via Twitter.com that Edgar will collide with Charles Oliveira, who is coming off a loss, while Swanson will tangle with Siver at UFC 162, which takes place at MGM Grand Garden Arena in Las Vegas, Nevada, on July 6, 2013.

Edgar, widely regarded as among the top pound-for-pound fighter in the sport not too long ago, is mired in an unprecedented three-fight losing skid. "The Answer" lost his 155-pound title to Ben Henderson at UFC 144 in Feb. 2012 and opted to try his hand 10 pounds lighter when their rematch at UFC 150 six months later didn't go his way, either.

His opponent on Independence Day weekend, Oliveira, had his two-fight win streak snapped by Swanson at UFC 152 in Sept. 2012, losing in emphatic fashion via first-round knockout. Swanson, who previously had technical knockout finishes over George Roop and Ross Pearson under his belt, went on to dominate Dustin Poirier en route to a unanimous decision victory at UFC on Fuel TV 7 one month ago in London, England.

Poirier actually replaced Siver in that bout because the German was injured in training and forced to withdraw with an undisclosed boo-boo. He most recently notched a lopsided victory over Nam Phan at UFC on FOX 5 in Dec. 2012 and did the same to Diego Nunes prior to that at UFC on Fuel TV 2 in April 2012.

Indeed, Siver has looked unstoppable since making the 10-pound dip from the lightweight division even though the striking-minded contender hasn't finished a fight via (technical) knockout since Nov. 2009.

Regardless, don't be surprised to see a new 145-pound No. 1 division contender crowned when the dust settles in "Sin City" on fight night ... even if it isn't the showdown most fight fans expected.

UFC 162: "Silva vs. Weidman" is headlined by a Middleweight championship contest as top-ranked pound-for-pound fighter and longtime 185-pound kingpin Anderson Silva puts his title on the line against undefeated Chris Weidman.

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