German Puentes defeated Jacobo Diaz 6-4 6-0 in the Spain 1 Masters 1 round of 16 on hard. The upset overturned the form book — Jacobo Diaz came in leading the head-to-head 4–1. German Puentes narrowed the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-07-19 | Spain F15 | QF | clay | Jacobo Diaz | 7-5 1-2 |
| 2003-04-21 | Spain F8 | QF | clay | Jacobo Diaz | 6-2 6-3 |
| 1996-01-05 | Spain 1 Masters 4 | SF | clay | Jacobo Diaz | 6-2 6-1 |
| 1995-02-03 | Spain 2 Masters 3 | R32 | clay | Jacobo Diaz | 6-3 6-1 |
| 1994-08-12 | Spain 7 Masters 3 | QF | clay | German Puentes | 6-2 6-2 |
Averages over each player's completed matches in the selected window (34 vs 83). 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