Nenad Zimonjic defeated Mark Merklein 2-6 6-0 6-1 in the Indianapolis q16 on hard. The upset overturned the form book — Mark Merklein came in leading the head-to-head 1–0. Nenad Zimonjic claimed a first win over Mark Merklein in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-06-11 | Halle | Q32 | grass | Mark Merklein | 2-6 7-5 7-6(3) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.