Andre Agassi defeated Sebastien Grosjean 6-3 6-2 6-2 in the Australian Open quarter-final on hard. The upset overturned the form book — Sebastien Grosjean came in defending last year's round of 64, but Andre Agassi had been the form player, winning 4 of their last 7 on hard. Andre Agassi extended the head-to-head to 4–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-04-18 | Houston | QF | clay | Sebastien Grosjean | 4-6 6-1 6-2 |
| 2004-01-19 | Australian Open | QF | hard | Andre Agassi | 6-2 2-0 RET |
| 2002-10-14 | Madrid Masters | SF | clay | Andre Agassi | 6-4 3-6 6-4 |
| 2001-11-12 | Masters Cup | RR | hard | Sebastien Grosjean | 6-3 6-4 |
| 2001-05-28 | Roland Garros | QF | clay | Sebastien Grosjean | 1-6 6-1 6-1 6-3 |
| 1998-08-31 | US Open | R128 | hard | Andre Agassi | 6-4 6-1 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 (173 vs 200). ATP, WTA & Challenger.