Sam Warburg defeated Matija Zgaga 6-4 6-3 in the USA F15 round of 16 on hard. The result followed the form book — Sam Warburg came in leading the head-to-head 1–0. Sam Warburg extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-06-28 | USA F16 | R16 | hard | Sam Warburg | 6-3 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.