Aljamain Sterling and Petr Yan both took to social media to weigh in on the result of their UFC 259 title fight.
Yan, who lost the bantamweight title via disqualification Saturday after landing an illegal knee that was deemed intentional in the fourth round, apologized for committing the foul.
Sterling, the new champion, vowed to run it back with Yan after saying he didn't want to capture the belt via disqualification.
Sterling added in a separate tweet that it was "heartbreaking" to watch Yan land the illegal strike.
"Funk Master" was winning 29-28 on one scorecard and losing 29-28 on two others heading into the fourth round.
Sterling's riding a six-fight winning streak and hasn't lost since 2017. Yan, meanwhile, suffered his first UFC loss.