LAS VEGAS — Middleweight contender David Lemieux defeated Marcos Reyes by a lopsided decision on the Canelo Alvarez-Julio Cesar Chavez Jr. card Saturday at T-Mobile Arena.

Lemieux (38-3, 33 knockouts) attacked from the opening bell but Reyes, moving laterally, holding, doing anything to avoid the knockout punch, was able to survive the 10 rounds. He even managed to score at times with his own flurries.

The problem for Reyes was that his punches were light, inconsequential slaps compared to Lemieux’s bombs, as he lost round after round and took a terrible beating in the process. And the pounding looked worse than it might’ve because Reyes bled most of the fight, as he was cut above his right eye by a punch in the second round.

Lemieux had some rounds that could’ve been scored 10-8 in his favor, as he had stretches when he landed 10, 15 blistering shots that would’ve taken out a less resilient fighter than Reyes. The Mexican is definitely that. He somehow remained on his feet even if it meant holding onto Lemieux for dear life, as he did a number of times during the fight.

Reyes, his face an absolute mess, won a moral victory of sorts. Lemieux won on the scorecards 99-90, 99-90 and 98-91. Reyes lost a point for punching after the bell after the eighth round.

The fighters agreed to a catchweight of 163 pounds for the fight.