Tommy Haas defeated Andre Agassi 7-6 6-7 6-3 in the Los Angeles quarter-final on hard. The upset overturned the form book — Andre Agassi came in leading the head-to-head 6–3. Tommy Haas narrowed the head-to-head to 6–4.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-03-06 | Indian Wells Masters | R32 | hard | Tommy Haas | 7-5 6-2 |
| 2004-10-25 | Stockholm | SF | hard | Andre Agassi | 7-6(5) 7-6(4) |
| 2004-07-26 | Canada Masters | R64 | hard | Andre Agassi | 4-6 6-4 6-4 |
| 2002-05-06 | Rome Masters | F | clay | Andre Agassi | 6-3 6-3 6-0 |
| 2001-03-12 | Indian Wells Masters | R32 | hard | Andre Agassi | 7-6(5) 6-3 |
| 2000-11-06 | Lyon | R16 | clay | Andre Agassi | 6-2 6-3 |
| 1999-09-27 | Grand Slam Cup | QF | carpet | Tommy Haas | 6-0 6-7(2) 6-4 |
| 1998-06-22 | Wimbledon | R64 | grass | Tommy Haas | 4-6 6-1 7-6(4) 6-4 |
| 1998-03-02 | Scottsdale | SF | hard | Andre Agassi | 6-2 6-1 |
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 (200 vs 116). ATP, WTA & Challenger.