Guido Pella defeated Dominic Thiem 6-1 6-4 in the Rio de Janeiro semi-final on clay. The upset overturned the form book — Dominic Thiem came in leading the head-to-head 3–1, but Guido Pella had been the form player, winning 1 of their last 4 on clay. Guido Pella narrowed 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 |
| 2018-02-12 | Buenos Aires | QF | clay | Dominic Thiem | 7-6(7) 6-4 |
| 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 |
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.