Both fighters put away their opponents by submission, with Dvalishvili (20-4 MMA, 13-2 UFC) tapping out Sean O'Malley in their rematch to defend his belt for a second time, while Harrison (19-1 MMA, 3-0 UFC) forced a changing of the guard with a tapout of Julianna Peña in the co-main event at Prudential Center in Newark, N.J.

Kayla Harrison has hit the jackpot. The two-time Olympic champion added more gold to her trophy case, winning the UFC women's bantamweight championship and setting up a valuable fight with soon-to-be Hall of Famer Amanda Nunes.

After revealing in April that she intended to come out of retirement to challenge the UFC 316 title fight winner, Nunes' dance partner was solidified Saturday when Kayla Harrison captured the women's bantamweight title from Julianna Peña at Prudential Center in Newark, N.J.