The UFC has officially added five new bouts to its UFC 229 pay-per-view event, set for Oct. 6 in Las Vegas, which will be headlined by the return of its biggest star in Conor McGregor.
Pettis is coming off a huge split-decision win against former title contender Joseph Benavidez in June. Formiga has won three of his past four fights.
Also announced: a light heavyweight contest between Ovince Saint Preux (23-11) and Dominick Reyes (9-0); a female bantamweight fight featuring Yana Kunitskaya (10-4) and Lina Lansberg (8-3); and a welterweight bout between Ryan LaFlare (14-2) and Tony Martin (13-4).
McGregor (21-3) is scheduled to face undefeated lightweight champion Khabib Nurmagomedov (26-0) in what is arguably the biggest fight in UFC history.