Horacio Zeballos defeated Florian Mayer 6-3 6-4 7-6 in the US Open round of 128 on hard. The upset overturned the form book — Florian Mayer came in defending last year's round of 128. Horacio Zeballos extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-01-02 | Doha | R32 | hard | Horacio Zeballos | 6-7(3) 6-4 7-6(9) |
| 2012-07-16 | Hamburg | R32 | clay | Florian Mayer | 7-6(7) 7-5 |
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 (168 vs 117). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About