A flyweight bout between Matheus Nicolau and Alex Perez headlined Saturday's UFC Vegas 91 event in which Perez defeated Nicolau via second-round knockout. After a very close first round, Perez caught Nicolau with a right hook that knocked him out. In 7:16 of action, Nicolau landed 22 significant strikes. With the loss, Nicolau is now 1-2 in his last three and 7-4 in the UFC.

Former title challenger Alex Perez rebounded from three straight defeats on Saturday when he scored a second-round knockout victory over Matheus Nicolau. This was his first fight after 1,421 days of inactivity. After replacing an injured Manel Kape against Nicolau on Saturday night, Perez had a lot on the line after losing three fights in a row. In the second round, he landed a right hook that knocked Nicolau out. In 7:16 of action, Perez landed 28 significant strikes.

Ariane Lipski suffered a unanimous decision loss to Karine Silva at UFC Vegas 91 on Saturday. Lipski was last seen in action at the UFC 296 event, where she defeated Casey O'Neill via second-round armbar. In 15 minutes of action, Lipski landed 42 significant strikes compared to Silva who landed 27. Lipski had success with her striking but was taken down and controlled by Silva on a few occasions. The loss knocks Lipski down to 6-6 in the UFC.

Karine Silva picked up a decision win over Ariane Lipski on the main card of UFC Vegas 91 on Saturday. It's the first time in the Brazilian's career she won a fight on the scorecards. This was a closely contested fight, where Silva edged out a decision win by taking Lipski down five times and by having better spells of control on the mat. In 15 minutes of action, Silva landed 27 significant strikes. Silva has now won all four of her UFC fights and has improved her professional MMA record to 18-4.