Las Vegas hosted a Zuffa-promoted card on Saturday, where Ukraine’s Serhii Bohachuk squared off with Shane Mosley Jr. in a matchup that carried real stakes for both men. In the sixth round, Mosley Jr. dropped Bohachuk and closed the show with a follow-up assault that forced the referee to wave it off, handing the American a meaningful stoppage win in front of a hometown fight crowd.For Bohachuk, 31, the loss marks the fourth defeat of his professional career and his second by stoppage. The result also gives Mosley Jr. a useful boost in a crowded junior middleweight picture, where a strong finish can do more for a fighter’s standing than a routine decision ever could.

Serhii Bohachuk will face Shane Mosley Jr. in the main event of Zuffa Boxing 6 on May 10 at Meta Apex in Las Vegas. The 10-round middleweight bout matches the hard-charging Ukrainian contender against the son of a former boxing great in a fight that could reshape the next tier of the division.

Zuffa Boxing, a boxing promotion led by Dana White with financial support from Saudi investors, has published an expanded list of boxers officially associated with the organization through agreements.

Sergei Bogachuk (26-3, 24 KO) will return to the ring on February 1 in Las Vegas as part of the second tournament of the Zuffa Boxing organization, owned by UFC head Dana White. In his first fight after losing to Brandon Adams in September, the Ukrainian will face Radzhab Butaev.