Head to head
1
Hard
0
1
Grass
0
David Nainkin's wins on the left · Mark Merklein's on the right · bar lengths share one scale
All meetings (2)
| 1998 | US Open | Hard | R128 | David Nainkin | 6-7(3) 6-0 6-4 6-4 |
| 1998 | Queen's Club | Grass | R64 | David Nainkin | 6-3 6-3 |
Methodology
Head-to-head totals and surface splits exclude walkovers (no match was played), which follows ATP convention — walkover meetings still appear in the match list. The momentum chart plots the running lead across all counted meetings, oldest to newest.