Multiple outlets have confirmed the booking following an initial report from ESPN.com. UFC 229 takes place at the T-Mobile Arena in Las Vegas on Oct. 6. A headliner has not been announced for the card. The Pettis-da Silva winner could presumably be the next No. 1 contender for the 125-pound title.
Pettis rebounded from a loss to Henry Cejudo in December to earn the biggest win of his career to date, as he took a split decision over Joseph Benavidez at UFC 225 on June 9. The 24-year-old Roufusport product has won five of his last six Octagon appearances, with other notable triumphs coming against Brandon Moreno, John Moraga and Chris Cariaso.
Da Silva, meanwhile has won three of his last four promotional appearances. The Brazilian jiu-jitsu black belt last appeared at UFC 221, where he choked out Ben Nguyen in the third frame on Feb. 10. The 33-year-old Brazilian is 8-4 during his promotional tenure and 21-5 as a professional overall.