Kei Nishikori defeated Juan Monaco 6-2 6-2 5-7 6-2 in the US Open round of 128 on hard. The upset overturned the form book — Juan Monaco came in leading the head-to-head 2–0, defending last year's round of 16, but Kei Nishikori had been the form player, winning 3 of their last 6 on hard. Kei Nishikori claimed a first win over Juan Monaco in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-09-24 | Kuala Lumpur | SF | hard | Juan Monaco | 6-2 2-6 7-6(4) |
| 2011-08-21 | Winston-Salem | R16 | hard | Juan Monaco | 6-0 6-3 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (200 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About