Head to head
Rivalry summary
Stan Smith and Zan Guerry met 3 times on the ATP tour between 1968 and 1977. Zan Guerry leads the head-to-head 2–1 against Stan Smith. By surface, Guerry leads 2–0 on clay.
0
Clay
2
1
Grass
0
Stan Smith's wins on the left · Zan Guerry's on the right · bar lengths share one scale
All meetings (3)
| 1977 | Washington-2 | Clay | R64 | Zan Guerry | 6-3 6-3 |
| 1969 | Houston | Clay | R16 | Zan Guerry | 6-2 9-7 |
| 1968 | South Orange | Grass | R32 | Stan Smith | 6-2 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.