Devin Haney v Vasyl Lomachenko
LAS VEGAS, NEVADA - Devin Haney celebrates after defeating Vasyl Lomachenko of Ukraine during their Undisputed lightweight championship fight at MGM Grand Garden Arena on May 20, 2023 in Las Vegas, Nevada. (Photo by Sarah Stier/Getty Images) Sarah Stier/Getty Images

Undisputed Devin Haney won via a highly controversial unanimous decision against Ukrainian Vasiliy Lomachenko last Saturday to retain his five championship belts in the weight division at the MGM Grand Garden Arena in Las Vegas, Nevada.

Many felt that the fight should have gone the other way, but it was universally agreed that it was close enough not to warrant a unanimous decision.

Devin Haney Labels Vasily Lomachenko a Sore Loser

The 24-year-old fighter did not hold back on Twitter, throwing expletives after boxing manager Eglis Klimas sent several letters to the four major boxing-sanctioning bodies - the WBC, WBA, IBF, & WBO.

The letters contained the same message, requesting Lomanchenko to be reinstated as the number 1 contender for each of Haney's belts for another chance to claim it for a potential rematch.

The team of Lomachenko is currently preparing for an appeal of the results of the fight.

The undisputed champ called the Ukrainian a "sore loser" for these actions, advising him to take his loss like a man.

Haney also wants to get back the $400,000 fine he paid after shoving Lomachenko at the weigh-in, according to Boxing News 24.

The boxer also reacted in another tweet by posting an unflattering photo of Lomachenko while covering his eyes.

He also dissed longtime boxing promoter Bob Arum, who told Lomachenko that he won the fight easily.

"Bob old ass was sleep all fight.. I took a look at him between rounds," the young fighter said.