Juan Giner defeated Carlos Castellanos 6-4 6-0 in the Spain 2 Masters 1 round of 16 on clay. Juan Giner extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-04-07 | Spain 4 4 | R16 | clay | Carlos Castellanos | 6-1 7-6(5) |
| 1998-08-03 | Spain F5 | QF | clay | Juan Giner | 6-3 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.