Marc Fornell Mestres defeated Steven Diez 6-3 7-6 in the Spain F10 round of 32 on clay. The upset overturned the form book — Steven Diez came in leading the head-to-head 3–1. Marc Fornell Mestres narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-03-16 | Morocco F2 | R16 | clay | Steven Diez | 7-5 6-1 |
| 2016-02-29 | Spain F6 | R16 | clay | Steven Diez | 6-2 4-1 |
| 2012-02-20 | Spain F3 | R32 | clay | Steven Diez | 6-4 6-3 |
| 2011-02-14 | Spain F6 | R32 | clay | Marc Fornell Mestres | 6-1 6-1 |
Averages over each player's completed matches in the selected window (35 vs 200). 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