Radim Zitko defeated Joseph Sirianni 6-0 6-3 in the Australia F3 qualifying round on clay. Radim Zitko extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-03-15 | Australia F2 | R16 | hard | Joseph Sirianni | 1-6 6-4 6-2 |
| 1998-07-13 | Denmark F3 | R16 | clay | Radim Zitko | 2-6 6-0 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.