Sean O'Malley, one of UFC's top up-and-coming stars, will return to the Octagon in March. And the promotion has another big main event scheduled for February.

CEO Dana White announced Monday on social media that O'Malley will defend his bantamweight title against Marlon "Chito" Vera in the main event of UFC's March pay-per-view card. No specific date or location was announced.

In addition, Alexander Volkanovski will defend his UFC featherweight title against Ilia Topuria on the February pay-per-view card, which also does not have a location or date announced.

ESPN has Volkanovski ranked No. 3 on its MMA pound-for-pound list and O'Malley at No. 7.

O'Malley (17-1, 1 NC) won the belt by finishing Aljamain Sterling via TKO at UFC 292 in August. The Montana-born Arizona resident is unbeaten in six straight fights. O'Malley, 29, suffered his only career loss to Vera in 2020.

Vera (21-8-1) is coming off a unanimous decision over Pedro Munhoz at UFC 292. The Ecuadorian-born fighter who lives and trains in California has won five of his past six fights. Vera, 30, has the most finishes (10) in UFC bantamweight history.

Volkanovski (26-3), a 35-year-old Australian, fought for the lightweight title against Islam Makhachev last month at UFC 294, losing via first-round knockout. He has five successful title defenses at featherweight. Topuria (14-0), a 26-year-old Spain resident of Georgian descent, is 6-0 in UFC with five finishes.