Magnus Gustafsson defeated Tommy Haas 6-3 6-1 in the Stuttgart Outdoor round of 32 on clay. The upset overturned the form book — Tommy Haas came in leading the head-to-head 3–2, but Magnus Gustafsson had been the form player, winning 3 of their last 4 on clay. Magnus Gustafsson narrowed the head-to-head to 3–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-10-01 | Moscow | QF | hard | Tommy Haas | 6-1 6-4 |
| 2001-02-26 | San Jose | R16 | hard | Tommy Haas | 4-6 6-3 6-4 |
| 1999-11-08 | Stockholm | R16 | hard | Magnus Gustafsson | 6-3 7-6(7) |
| 1998-11-02 | Paris Masters | R16 | hard | Magnus Gustafsson | 6-4 6-2 |
| 1997-05-12 | Rome Masters | R64 | clay | Tommy Haas | 3-6 6-4 7-5 |
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 (164 vs 200). ATP, WTA & Challenger.