At the 2025 Shanghai Masters, it was quite the moment when Arthur Rinderknech found himself in a family showdown against his cousin, Valentin Vacherot. The 30-year-old Frenchman, who had convincingly taken the first set 6-4, ended up being outplayed by the 204th-ranked Vacherot. Vacherot made a strong comeback, winning the next two sets 6-3, 6-3, and pulled off an incredible upset as the lowest-ranked player ever to win a Masters 1000 event.

The match unfolded in front of a passionate crowd, including none other than Roger Federer. It turned into a real physical showdown, with Rinderknech looking like he was running on fumes by the final set. He even had to take a medical timeout for his back before Vacherot secured that memorable victory. But you know what? The real highlight of the day

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