David Nainkin defeated Mark Merklein 6-7 6-0 6-4 6-4 in the US Open round of 128 on hard. The result followed the form book — David Nainkin came in leading the head-to-head 1–0. David Nainkin extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-06-08 | Queen's Club | R64 | grass | David Nainkin | 6-3 6-3 |
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 (16 vs 3). ATP, WTA & Challenger.