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Jakub Mensik defeated Shintaro Mochizuki 6-1, 6-4, 7-5 — US Open 2026 R128.
Jakub Mensik and Shintaro Mochizuki: Jakub Mensik leads 1–0 across 1 recorded meeting.
The 17th seed is through at the US Open with his serve barely inconvenienced, 17 aces to one and 74% of first-serve points won against 56%. Mensik's return did the sharper work, seven breaks from 11 chances with the opener settled by the game-6 break for 5-1. It still ran 2h 49m, a third set holding seven breaks of serve accounting for most of that; the Czech, who had no prior meetings on record with Mochizuki, is 20-8 on hard this season.