Gael Monfils defeated Donald Young 6-3 6-7 6-4 2-6 7-5 in the US Open round of 64 on hard. The upset overturned the form book — Donald Young came in leading the head-to-head 1–0, defending last year's round of 64, but Gael Monfils had been the form player, winning 2 of their last 6 on hard. Gael Monfils claimed a first win over Donald Young in two meetings, narrowing the head-to-head to 1–1.
Monfils G. came through in five sets.
Monfils G. and Young D. faced 4 of the same opponents in the last 12 months. Monfils G. went 2–2 (50%) against them, Young D. 1–3 (25%). Results against comparable opponents are close (1 : 0 better-results split).
Only 4 common opponents — small sample, treat as indicative.