BURY boxer Scott Quigg is confident he will become a two-weight world champion on Saturday night.

The 29-year-old makes his American ring debut as challenger to WBO featherweight champion Oscar Valdez in California, aiming to return to the top of the world.

Quigg, who has just one defeat in 37 professional fights – to Carl Frampton in February 2016, admits he may be viewed as the underdog going in against unbeaten Mexican Valdez.

But is is relishing that tag and believes the preparation he has done in camp with trainer Freddie Roach in Los Angeles will pay off on the night.

Quigg told Sky Sports: "I 100-per-cent believe I will become world champion on Saturday.

"It's a fight that excites me.

"These are the fights I want to be involved in.

"They don't come much bigger than Oscar Valdez over in America in the featherweight division.

"He is 23 and 0 with 19 knockouts so he hasn't really put a foot wrong

"But these are the challenges I want.

"The Americans are building him as the next big star so I'm probably a slight underdog, that's what people will be thinking.

"I don't see myself as an underdog.

"All I know is that I've got to put the work in and I'm very confident I can do the job."

Former WBA World Super Bantamweight champion Quigg has moved up a weight since his defeat to Frampton two years ago at the Manchester Arena.

This will be his fourth fight at that level after three successive victories but it will be his toughest test yet against a champion who has won all 23 of his professional bouts.

And while Valdez is not taking Quigg, whom he has sparred with in the past, lightly, the 27-year-old is confident he will be extending his unblemished record this weekend.

He said: "We are more than ready to go to war and defend the title at all costs.

"We know him very well, and we know that his style in combination with mine is the perfect storm that will give the fans a great show.

"This will be my fourth world title defence, and I have learned a lot from my battles against warriors like Miguel Marriaga and Genesis Servania.

"Now, I have an even more difficult fight against Scott Quigg. We are well prepared for whoever. This title stays with me in Mexico.

"For this fight, I did the hard part of my training in Guadalajara, and I think it has been one of the best preparations of my career because I trained so calmly and so peacefully.

"Here in Los Angeles, we are putting the final touches on our preparation. We are doing very well with the weight. Now I'm just focused on the fight."