Gaethje stops Topuria in Round 4 to become UFC lightweight champion

Justin Gaethje defeated Ilia Topuria by TKO at the end of Round 4 when Topuria's corner stopped the fight, claiming the UFC lightweight championship. Elsewhere on the card, Ciryl Gane stopped Alex Pereira by TKO in Round 2 to win the interim heavyweight title. Sean O'Malley knocked out Ayman Zahabi in Round 2, Josh Hokit stopped Derrick Lewis by TKO in Round 2, Mauricio Ruffy finished Michael Chandler by TKO in Round 1, Bo Nickal stopped Kyle Daukaus by TKO in Round 1, and Diego Lopes knocked out Steve Garcia in Round 2.