Guido Pella defeated Leonardo Mayer 7-6 7-6 in the Winston-Salem round of 64 on hard. The upset overturned the form book — Leonardo Mayer came in defending last year's round of 64. Guido Pella extended the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-03-18 | Miami Masters | R64 | hard | Leonardo Mayer | 6-2 6-4 |
| 2019-02-11 | Buenos Aires | R16 | clay | Guido Pella | 6-4 1-6 7-6(5) |
| 2016-02-08 | Buenos Aires | R32 | clay | Leonardo Mayer | 2-6 6-3 6-3 |
| 2014-02-24 | Sao Paulo | R32 | clay | Guido Pella | 7-6(4) 6-7(3) 7-6(4) |
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.