Mathias Hellstrom defeated Per Thornadtsson 6-4 6-7 6-1 in the Sweden 2 Masters 2 round of 16 on carpet. The upset overturned the form book — Per Thornadtsson came in leading the head-to-head 1–0. Mathias Hellstrom claimed a first win over Per Thornadtsson in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-05-07 | Turkey 1 3 | R32 | clay | Per Thornadtsson | 4-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.