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Sign upGael Monfils defeated Adolfo Daniel Vallejo 2-6, 6-1, 6-2, 6-0 — US Open 2026 R128.
Adolfo Daniel Vallejo and Gael Monfils: Gael Monfils leads 1–0 across 1 recorded meeting.
A day after his 40th birthday, a wild card ranked outside the top 300 broke serve seven times at the US Open. Vallejo, whom the betting market made a 55 percent pick, finished with 34 unforced errors against 20 winners and five double faults. The two breaks he took in the opener, in games 3 and 5, were the last lead he held: Monfils broke for 2-0 in game 2 of the second set and took 78 percent of his first-serve points to the favorite's 60. The Frenchman, winless since early August, is into the second round after 2h 15m on court.