Jan Siemerink defeated Fredrik Jonsson 6-3 6-2 in the San Marino round of 32 on clay. The result followed the form book — Jan Siemerink came in leading the head-to-head 1–0. Jan Siemerink extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-02-08 | St. Petersburg | R16 | carpet | Jan Siemerink | 7-6(2) 6-2 |
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 (51 vs 21). ATP, WTA & Challenger.