Photos: Adonis Stevenson Blasts Williams Hard - MEGA Gallery

QUEBEC CITY - Light heavyweight world champion Adonis "Superman" Stevenson (28-1, 23 KOs) delivered a highlight reel knockout victory over Thomas "Top Dogg" Williams Jr. (20-2, 14 KOs) in the fourth-round of an exciting main event showdown on Premier Boxing Champions on Spike Friday night from Centre Videotron in Quebec City, Canada. Photos by Premier Boxing Champions.

"It was a firefight," said Stevenson. "He put pressure on me so I decided to put pressure on him too. It was a fight with two guys who could punch and it was spectacular. It was my daughter's birthday and I gave her a great gift."

The defending champion Stevenson, fighting in his adopted hometown, put Williams down in round one with a straight left hand. Williams was able to recover and began to fire back in round two.

However, Stevenson's jab consistently sent Williams backtracking, while Williams abandoned the jab and attempted to cut the distance with power punches from difficult angles. Williams staggered the world champion several times, using an effective counter right hand while getting the best of many exchanges.

Both men were hurt in an exciting third round that saw momentum swing in each man's favor before the bell rang to end the round. A cut opened up over the left eye of Williams in the end of the round that was tended to in his corner. Williams hit the canvas as a result of a low blow early in the fourth, but regained his footing shortly after.

The notorious power puncher Stevenson eventually landed the deciding blow of the night when he caught Williams' chin hanging in the pocket and delivered a straight left hand that put the challenger to the floor. The Washington, DC area-native was unable to recover, prompting referee Michael Griffin to stop the bout 2:54 into the fourth round.

Additional televised action saw rising middleweight contenders Immanuwel Aleem (16-0-1, 9 KOs) and Demond Nicholson (17-1-1, 16 KOs) fight to a majority draw in their eight-round bout.

Neither fighter was able to control of the fight with Nicholson attempting to use his length and jab while Aleem tried to cut the distance and attack with short punches. Nicholson appeared to have the more effective attack in the early rounds, while Aleem began to have more success as the fight shifted to toe-to-toe action in the second half of the fight.

The judges' scores reflected the close nature of the fight as one judge had it 77-74 for Aleem while the other two judges had it a 76-76 draw.

The televised opener saw Eleider "Storm" Alvarez (20-0, 10 KOs) keep his perfect record intact with a unanimous decision victory over New Zealand's Robert Berridge (27-5, 21 KOs) in a 10-round light heavyweight affair.

"I am happy with the win, but I would have liked a knockout! He was tough, but he did not hurt me at all and I thought that I hurt him. I am ready for my next challenge, which will hopefully be a world title fight."

The top-rated contender for Stevenson's title, Alvarez established his jab early on while attacking the body of Berridge with right hooks. Alvarez continued to control the fight from a distance as Berridge was slow to begin increasing his output before he started putting the pressure on in round five.

The southpaw Berridge was able to land occasionally on Alvarez with a looping left hand, but never put the undefeated fighter in danger. Alvarez began to have more success varying up his attack with right uppercuts and hooks that eventually left Berridge's right eye swollen and bruised.

Alvarez took home the decision by scores of 99-90 and 98-92 twice.

PBC on Spike was promoted by Group Yvon Michel (GYM).