Muhammad announced that he was out of the fight via Instagram:
Unfortunately had to pull out of my fight next week with an injury first time ever pulling out in my career it was a hard choice but God’s plan is bigger than mine I had a lot of people trying to help me get back fast and I appreciate you all I’ll be back soon inshallah --
Dos Santos (19-5-0) enters the contest on the strength of a five fight winning streak, with those victories coming over Omari Akhmedov, Keita Nakamura, Lyman Good, Max Griffin and Sean Strickland. Dos Santos hasn’t suffered a defeat in over three years, with that last loss coming to Nicolas Dalby at UFC Fight Night 67. Dos Santos has suffered a total of five defeats as a professional MMA fighter, but he has yet to be beaten by KO/TKO.
Vendramin (7-0-0) is going to be making his UFC debut in this bout and does so with an undefeated streak that has lasted over two years. Vendramin has yet to see any of his professional MMA bouts go the distance and only two bouts have gone past the opening round. Vendramin is also returning to action for the first time in over a year, as Vendramin last competed in August of 2017.
UFC Fight Night Sao Paulo takes place on Saturday, September 22 from the Ibirapeuroa Gymnasium in Sao Paulo, Brazil with Jimi Manuwa and Thiago Santos headlining. Fightful is providing live coverage of the event, which airs live on Fox Sports 1.