Undisputed lightweight champion Devin Haney has retained his titles by winning a controversial unanimous decision over former three-division champion Vasiliy Lomachenko.

Lomachenko dominated the latter rounds and outpunched Haney, 124-110.

But much to the dismay of the 14,436 fans in attendance at the MGM Grand Garden, all three judges had Haney winning.

Tim Cheatham and David Sutherland scored the fight 115-113, while Dave Moretti had it 116-112

"Lomachenko is a future Hall of Famer," Haney said.

"It was a blessing. He was my toughest opponent. He was very crafty. He turns it up in the championship rounds. (This fight) put me in the history books forever."

Haney improved to 30-0. Lomachenko, 35, dropped to 17-3.

Now Haney has a decision to make, as he will be a free agent when he wakes up on Sunday morning, as his three-fight deal with Top Rank and Lou DiBella is now expired.

The 24-year-old has plenty of options, as he could stay at 135 pounds for one final fight, where a highly anticipated match awaits against fellow pound-for-pound contender Shakur Stevenson, who was in attendance.

Stevenson disagreed with the result.

"Lomachenko should be undisputed champion - he won that fight," Stevenson said.

But if Haney is ready to step in the ring with another undefeated fighter, Stevenson said: "Let's make it happen. I can't wait."

Haney could also move to junior welterweight, where he would pursue a second-division title while positioning himself to meet the winner of the June 10 fight between Josh Taylor and Teofimo Lopez Jr.