By surface
| Surface | Clark Graebner | Miguel Olvera |
|---|---|---|
| Carpet | 1 | 0 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1968-06-07 | ATP | Davis Cup AME F: USA vs ECU | Round Robin | Carpet | Clark Graebner | 6-2 | 6-1 | 6-2 |
| Surface | Clark Graebner | Miguel Olvera |
|---|---|---|
| Carpet | 1 | 0 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1968-06-07 | ATP | Davis Cup AME F: USA vs ECU | Round Robin | Carpet | Clark Graebner | 6-2 | 6-1 | 6-2 |