Joseph Sirianni defeated Toby Mitchell 7-6 4-6 6-4 in the Australia 1 Masters 4 round of 16 on hard. The result followed the form book — Joseph Sirianni came in leading the head-to-head 4–2. Joseph Sirianni extended the head-to-head to 5–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-11-04 | Australia F2 | SF | clay | Toby Mitchell | 6-2 6-3 |
| 1998-10-28 | Australia F1 | F | clay | Joseph Sirianni | 6-2 6-4 |
| 1998-03-01 | Australia 1 Masters 2 | R32 | hard | Toby Mitchell | 6-4 6-7 6-1 |
| 1997-11-02 | Australia 4 Masters 3 | QF | hard | Joseph Sirianni | 6-2 6-2 |
| 1997-09-28 | Australia 3 Masters 4 | SF | hard | Joseph Sirianni | 6-1 6-4 |
| 1994-10-30 | Australia 3 Masters 1 | R32 | hard | Joseph Sirianni | 6-3 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.