According to the search results, Paulo Costa has been ruled out of his fight against Khamzat Chimaez at UFC 294 due to a staph infection in his elbow that required surgery. Kamaru Usman will take his place in the fight. Costa had attempted to hide the setback from the UFC, but it was revealed on social media. Despite the news of his hospitalization and surgery, Costa denied that he was pulling out of the fight.