Rei Sakamoto defeated Adam Walton 6-2 6-4 in the Tokyo qualifying round of 16 on hard. The upset overturned the form book — Adam Walton came in ranked #98, but Rei Sakamoto had been the form player, winning 7 of their last 10 on hard.
Sakamoto R. took it in straight sets.
Rei Sakamoto beat Adam Walton 6-2 6-4. Umpiry, "Rei Sakamoto vs Adam Walton — Tokyo Qualifying Round of 16", https://umpiry.com/match/2025-09-22/sakamoto-vs-walton-tokyo-q16?utm_source=cite (as of 22 September 2025).