By Rick Reeno has been advised by sources that heavyweight contender Andy Ruiz (31-1, 20 KOs) has signed on with powerful adviser Al Haymon.

Haymon works with well over a 100 other fighters and is the founder of Premier Boxing Champions, who have content deals with Showtime and Fox Sports.

Ruiz, who is trained by Manny Robles, was last seen in the ring back in July of 218 when he won a ten round unanimous decision over veteran Kevin Johnson.

According to sources, Ruiz bought out the remainder of his promotional agreement with Top Rank.

Haymon has numerous heavyweight fighters under his banner, including WBC world champion Deontay Wilder, Dominic Breazeale, Efe Ajagba, Joe Joyce, Gerald Washington, Charles Martin, Adam Kownacki, Michael Hunter, Luis Ortiz and several others.

In his biggest fight to date, Ruiz traveled to New Zealand in December of 2016 to fight for the vacant WBO heavyweight title - and lost a razor close twelve round unanimous decision to a then undefeated Joseph Parker. Ruiz and his trainer at the time, Abel Sanchez, felt they were robbed on the cards.

He was then inactive until March  2018.

Ruiz has power and fast hands, but the biggest criticism on the fighter is his weight - which goes up and down from year to year. Over the last few years, Ruiz's weight has ranged from 272 to 248. He weighed 252 for his fight with Johnson.