**Kayla Harrison Captures Championship with Stunning Submission Victory**

In a thrilling co-main event, referee Vitor Ribeiro oversaw the action as Kayla Harrison faced off against Peña. The bout began with Harrison probing with a few strikes, while Peña opted for a patient approach. Throughout the opening minute, neither fighter landed any significant blows. However, Harrison quickly adopted an aggressive strategy, effectively working to cut off the cage.

Harrison attempted a takedown, which Peña initially managed to defend as they collided with the cage. Despite this, Harrison persisted and successfully brought Peña to the mat with ample time left in the round. From side control, Harrison transitioned to Peña's half guard and then to full guard. Peña responded with shots from the bottom, but Harrison maintained her position and answered with ground-and-pound strikes. Peña's active guard kept her in the fight, but Harrison stayed committed to a conservative game plan.

One notable moment came when Peña landed an illegal upkick, visibly hurting Harrison. Referee Ribeiro intervened, breaking the action and deducting a point from Peña. This reset allowed both fighters to return to their feet, though the round concluded with Harrison clearly in control. The first round was decisively in Harrison's favor, earning her a 10-8 score.

As the second round commenced, Harrison continued her dominance with a straight left followed by an inside leg kick, pushing Peña back. A body kick from Harrison led to another clinch against the fence. Both fighters vied for underhooks, but Harrison's methodical approach allowed her to drag Peña down once more. From the top position, Harrison delivered short elbows and effective ground-and-pound.

Peña's efforts to slow Harrison's attack included a takedown attempt, but Harrison retained top control and maneuvered to Peña's back, pushing her down again. Nearing the end of the round, Harrison attempted to pass the half guard, presenting an arm-triangle opportunity. However, she opted for a kimura instead, successfully locking it in and forcing Peña to tap out.

With this victory, Kayla Harrison secured her status as the new champion, finishing the fight in spectacular fashion.