Joseph Sirianni defeated Glenn Knox 3-6 7-5 6-3 in the Australia 1 3 round of 32 on hard. The upset overturned the form book — Glenn Knox came in leading the head-to-head 2–0. Joseph Sirianni claimed a first win over Glenn Knox in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-11-06 | Australia F1 | R32 | hard | Glenn Knox | 7-6(6) 6-3 |
| 1999-09-19 | Australia 3 Masters 2 | R16 | hard | Glenn Knox | 6-0 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.