Doug Bohaboy defeated Mark Nielsen 7-6 6-3 in the Japan F7 qualifying round on hard. The upset overturned the form book — Mark Nielsen came in leading the head-to-head 1–0. Doug Bohaboy claimed a first win over Mark Nielsen in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-04-24 | China F1 | QF | hard | Mark Nielsen | 6-2 6-2 |
Averages over each player's completed matches in the selected window (1 vs 6). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. Small sample — read as indicative. About