Jack Della Maddalena stunned Belal Muhammad at UFC 315 to become the new welterweight champion in Montreal, with Della Maddalena remaining undefeated in the UFC. Muhammad, who had not lost since January 2019, lost via unanimous decision. The event also featured Valentina Shevchenko successfully defending her women's flyweight title against Manon Fiorot, with Shevchenko leveraging her experience in a competitive fight. Former bantamweight champion Jose Aldo returned from brief retirement and defeated Aiemann Zahabi, showcasing his elite striking skills. Alexa Grasso lost to Natalia Silva, who established herself as a top contender. The fight card included predictions from CBS Sports experts, with consensus favoring Muhammad over Maddalena, Shevchenko over Fiorot, Aldo over Zahabi, Grasso over Silva, and Saint-Denis over Prepolec. The event was highlighted by notable storylines such as ongoing disputes over Jon Jones' UFC future, injury concerns for Merab Dvalishvili, and legal challenges faced by fighters filing antitrust lawsuits against UFC. UFC 315's results and predictions underscore the high stakes and competitive nature of the current MMA landscape.