Head to head
Rivalry summary
Ron Holmberg and Clark Graebner met 2 times on the ATP tour between 1968 and 1969. Their head-to-head is level at 1–1. By surface, they are level 1–1 on hard.
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Hard
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Ron Holmberg's wins on the left · Clark Graebner's on the right · bar lengths share one scale
All meetings (2)
| 1969 | Salisbury | Hard | QF | Clark Graebner | 6-4 1-6 6-3 |
| 1968 | Richmond | Hard | QF | Ron Holmberg | 9-7 12-10 |
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.