Joao Domingues defeated David Vega Hernandez 6-4 6-0 in the Portugal F5 qualifying round on hard. The upset overturned the form book — David Vega Hernandez came in leading the head-to-head 3–2. Joao Domingues narrowed the head-to-head to 3–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-04-17 | Portugal F7 | QF | clay | Joao Domingues | 6-7(8) 6-0 6-4 |
| 2014-05-19 | Portugal F5 | SF | hard | Joao Domingues | 2-6 6-3 6-0 |
| 2014-05-12 | Portugal F4 | SF | carpet | David Vega Hernandez | 6-3 6-3 |
| 2013-08-12 | Spain F26 | QF | clay | David Vega Hernandez | 6-4 6-0 |
| 2013-05-13 | Portugal F6 | R32 | carpet | David Vega Hernandez | 6-3 6-3 |
Averages over each player's completed matches in the selected window (200 vs 104). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About