Michael Chang defeated Tommy Haas 6-3 6-2 in the Cincinnati Masters round of 64 on hard. The result followed the form book — Michael Chang came in leading the head-to-head 1–0, defending last year's round of 32. Michael Chang extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-02-09 | San Jose | QF | hard | Michael Chang | 6-3 6-7(3) 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 (36 vs 200). ATP, WTA & Challenger.