Joseph Sirianni defeated Paul Henri Mathieu 1-6 6-1 7-6 in the Adelaide quarter-final on hard. The upset overturned the form book — Paul Henri Mathieu came in leading the head-to-head 1–0, defending last year's round of 32. Joseph Sirianni claimed a first win over Paul Henri Mathieu in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-03-03 | Dubai | R32 | hard | Paul Henri Mathieu | 6-4 6-4 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (15 vs 200). ATP, WTA & Challenger.