Dominic Thiem defeated Guido Pella 7-6 6-4 in the Buenos Aires quarter-final on clay. The upset overturned the form book — Guido Pella came in defending last year's round of 32. Dominic Thiem extended the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-04-22 | Barcelona | QF | clay | Dominic Thiem | 7-5 6-2 |
| 2018-01-15 | Australian Open | R128 | hard | Dominic Thiem | 6-4 6-4 6-4 |
| 2017-09-25 | Chengdu | R16 | hard | Guido Pella | 7-6(6) 6-4 |
| 2016-02-15 | Rio de Janeiro | SF | clay | Guido Pella | 6-1 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 185). ATP, WTA & Challenger.