Naomi Osaka has announced her second split from coach Wim Fissette, after expressing frustration with her recent performance, including a second-round exit at the 2024 US Open. During their time together, Osaka won the 2020 US Open and 2021 Australian Open. Reports suggest Osaka may now be working with Patrick Mouratoglou, former coach of Serena Williams. Mouratoglou was recently seen coaching Osaka at UCLA, though neither party has confirmed the new partnership. Despite her efforts, Osaka has struggled to regain her top form since returning from maternity leave, reaching only two quarter-finals in 16 tournaments and falling to 75th in the world rankings.