Head to head
1
Hard
0
1
Clay
0
Paul Gerken's wins on the left · Syd Ball's on the right · bar lengths share one scale
All meetings (2)
| 1974 | Louisville | Clay | R64 | Paul Gerken | 7-5 6-4 |
| 1973 | Hong Kong | Hard | R16 | Paul Gerken | 3-6 7-6 11-9 |
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.