Devin Haney vs. Vasiliy Lomachenko, billed as Checkmate, was a professional boxing match contested on 20 May 2023, for the undisputed lightweight championship.

On 19 August 2019, Lomachenko defeated Luke Campbell and won the vacant WBC title, despite holding and defending belts with other sanctioning bodies.

[1] On 27 March 2022, Haney struck a deal with unified lightweight champion George Kambosos Jr to fight for the undisputed championship.

[8] The decision however, was greatly disputed, as many onlookers felt Lomachenko had done enough to win, including fellow boxers Shakur Stevenson and Jorge Linares, who had previously predicted a Haney victory.

It was described by multiple accounts as "thrilling", with Lomachenko's display against a substantially younger and larger opponent being highly lauded.