Marcus Sarstrand defeated Per Thornadtsson 7-5 6-3 in the Finland F1 qualifying round on clay. The upset overturned the form book — Per Thornadtsson came in leading the head-to-head 3–1, but Marcus Sarstrand had been the form player, winning 2 of their last 6 on clay. Marcus Sarstrand narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-09-24 | Sweden F2 | R16 | hard | Marcus Sarstrand | 6-4 6-1 |
| 1998-01-03 | Italy 1 Masters 3 | R16 | carpet | Per Thornadtsson | 6-1 6-2 |
| 1997-09-08 | Sweden Masters 2 | R16 | carpet | Per Thornadtsson | 4-6 6-1 6-2 |
| 1996-09-06 | Sweden 2 Masters 4 | R32 | carpet | Per Thornadtsson | 6-3 7-6 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.