Naomi Osaka Upset by 18-Year-Old Mia Pohankova at Pan Pacific Open in Tokyo

Naomi Osaka's return to Japan ended in disappointment on Thursday as she was eliminated from the Pan Pacific Open by 18-year-old Mia Pohankova. Osaka, the tournament's No. 7 seed and a four-time Grand Slam champion, was playing in front of a home crowd in Tokyo but could not overcome the unseeded teenager. The loss marks another early exit for Osaka, who has struggled to find consistent form since returning from maternity leave. Pohankova, ranked outside the top 100, delivered a fearless performance to claim the biggest win of her young career. The upset shakes up the draw in Tokyo and raises questions about Osaka's readiness for the upcoming hard-court season. For Pohankova, the victory is a breakthrough moment that could signal her arrival on the WTA Tour. Osaka will now look to regroup ahead of her next tournament, while Pohankova advances to face a new challenge in the quarterfinals.