Lassi Ketola defeated Marcus Sarstrand 6-3 6-4 in the Sweden 1 3 round of 32 on hard. The upset overturned the form book — Marcus Sarstrand came in leading the head-to-head 1–0. Lassi Ketola claimed a first win over Marcus Sarstrand in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-06-21 | Finland F3 | R16 | clay | Marcus Sarstrand | 7-5 6-3 |