Roman Andres Burruchaga vs Jan-Lennard Struff — R128 — Cincinnati Open

The cleaner player lost. Burruchaga kept his error count to 37 against Struff's 52 and finished ahead on total points, 102 to 99, but the 41st-ranked German owned the shorter rallies, winning 14 of 22 at net behind 16 aces. Broken for 3-4 in the third, Struff broke straight back in game 8 for 5-3, then needed two match points after Burruchaga erased the first, 2 hours 23 minutes in. That the win came on a surface where Struff had gone 1-7 this season matters more than the margin; he had also taken their only prior meeting on record, on clay in 2024.