Head to head
Rivalry summary
Craig Duncan and Ralph Geiger met 1 times on the ATP tour between 1971 and 1971. Ralph Geiger leads the head-to-head 1–0 against Craig Duncan.
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Clay
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Craig Duncan's wins on the left · Ralph Geiger's on the right · bar lengths share one scale
All meetings (1)
| 1971 | St. Petersburg | Clay | R32 | Ralph Geiger | 6-1 6-2 |
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.