Serena Williams and her former coach, Patrick Mouratoglou, made some magic on the tennis court together, but their relationship was not always a walk in the park. In an interview with The Guardian, Mouratoglou, 55, recalled a fight he had with Williams, 43, after she gave birth to her first daughter, Olympia, in September 2017. "It was after the pregnancy - not right after; I know these things take time," Mouratoglou said in the story, published on Thursday, September 11. "I told her, 'Listen, this is not a comment on how you look. It's not my problem.