Former world champion Liam Smith, 26-1-1 with 14 knockouts, fights outside Europe for only the second time in his Vegas debut when he faces Jaime Munguia, 29-0 with 25 knockouts, for the 21-year-old Mexican's World Boxing Organization junior middleweight title on Saturday night at the Hard Rock Hotel & Casino Las Vegas.

"To go to Vegas and fight for a world title is every fighter's dream," Smith said. "But it's only an extra incentive to my main motivation –- getting that WBO world junior middleweight title back around my waist."

Smith defended the title twice before surrendering it to Saul "Canelo" Alvarez in a knockout loss in Texas in 2016. He's won three fights since and after pulling out of a May fight with Sadam Ali due to illness finds himself with another chance at the crown.

"Munguia is obviously a dangerous puncher and I'll have to be wary of him early on, but he has never fought someone as good as me and a fully-fledged 154-pound fighter," Smith said.

"I can't afford to look an inch past Munguia though. He's world champion for a reason. With such a high knockout percentage I'm going to have to be my best ever. Unfortunately for Munguia, that's what I'll be."

Munguia stepped in for Smith in May and stopped Ali with a left hook in the fourth round for the title. He defends it for the first time in only his second Vegas bout.

But the champion understands his British rival has a wealth of experience to draw upon.

The co-feature sends Mensah, 31-0 with 23 knockouts, against World Boxing Association super featherweight champion Alberto Machado, 19-0 with 16 knockouts.

Mensah, 27, fights outside his homeland for the first time in his first world title attempt since the southpaw turned professional in 2010.