By surface
| Surface | Blaine Willenborg | Alvaro Betancur |
|---|---|---|
| Clay | 0 | 1 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1980-07-28 | ATP | South Orange | Quarterfinal | Clay | Alvaro Betancur | 4-6 | 4-6 |
| Surface | Blaine Willenborg | Alvaro Betancur |
|---|---|---|
| Clay | 0 | 1 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1980-07-28 | ATP | South Orange | Quarterfinal | Clay | Alvaro Betancur | 4-6 | 4-6 |