Francis Ngannou faced Andrei Arlovski on January 28, 2017, at UFC on Fox 23. He won the fight via TKO in the first round. The win also earned Francis’ second Performance of the Night bonus. Francis was expected to face Junior dos Santos on September 9, 2017, at UFC 215. However, on August 18, Dos Santos was pulled from the match after being notified of a potential USADA violation.