Alex Obrien defeated Mikael Tillstrom 6-4 6-7 6-4 in the Sydney Outdoor round of 16 on hard. The upset overturned the form book — Mikael Tillstrom came in leading the head-to-head 1–0. Alex Obrien claimed a first win over Mikael Tillstrom in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-04-13 | Tokyo | R32 | hard | Mikael Tillstrom | 5-7 6-4 6-4 |
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 (87 vs 142). ATP, WTA & Challenger.