The talented 21-year-old from Tijuana swarmed all over the outmatched Cook from the start of a one-sided undercard contest at the T-Mobile Arena.

Munguia had Cook in trouble with a flurry of punches at both the end of the first and second rounds before unloading in the third.

A series of shots to the body and head as Cook crouched on the ropes forced referee Benjy Esteves to step in to prevent further punishment.

Munguia improved to 31-0 with 26 knockouts following the victory as Cook slipped to 20-2.

“With each fight you will see me getting better,” Munguia said afterwards.

“I just want to show that I can get better and that I want to face the best, so I can show that I am the best.”

Cook, meanwhile, complained of being hit with low blows that went unpunished.

“He kept hitting me in the hip and a lot of low blows, which surprised me because the referee is experienced and didn’t give Munguia a warning,” he said.

“He’s tough, and it is what it is, and I hope to come back soon.”