LAS VEGAS - Ryan Burton catches up with Karim Mayfield., who's name has been mentioned several times by Floyd Mayweather Jr. in the last few days. Mayweather claims, which many are not taking seriously, that Mayfield is in the running to fight him on September 12th.

Mayfield was ringside as "Showtime" Shawn Porter (26-1-1, 16 KOs) outworked and out-landed Adrien "The Problem" Broner (30-2, 22 KOs) on his way to a unanimous decision victory on Premier Boxing Champions on NBC in front of 8,138 fans at the MGM Grand Garden Arena on Saturday night.

In a fight dubbed "The Battle for Ohio", the Akron-born Porter threw 590 punches compared to the 309 thrown by the Cincinnati-native Broner. Porter landed 149 punches compared to 88 from Broner.

Porter relentlessly attacked the defensive-minded Broner with jabs and power shots to the body. Broner tried to slow down Porter by pushing and holding and was eventually deducted a point by referee Tony Weeks in round 11.

Showing the great power and heart that made him a three-time world champion, Broner came out strong in the 12th round and sent Porter to the canvas with a powerful left hook. Porter was able to recover and stay on his feet despite losing the round.

Porter was rewarded for his efforts with a unanimous decision by scores of 114-112, 115-11 and 118-108.

2012 U.S. Olympian Errol "The Truth" Spence Jr. (17-0, 14 KOs) remained undefeated and justified the talk of him as a future superstar by stopping Phil "The Italian Sensation" Lo Greco (26-2, 14 KOs) in the third round. The official stoppage coming 1:50 into the round.