By surface
| Surface | John Isner | Horacio Zeballos |
|---|---|---|
| Clay | 4 | 0 |
All meetings (4)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2018-05-28 | ATP | Roland Garros | Round of 64 | Clay | John Isner | 6-78 | 7-64 | 7-62 | 6-2 | |
| 2012-04-09 | ATP | Houston | Round of 16 | Clay | John Isner | 6-73 | 6-4 | 6-2 | ||
| 2011-04-04 | ATP | Houston | Round of 16 | Clay | John Isner | 7-5 | 6-3 | |||
| 2010-04-25 | ATP | Rome Masters | Round of 64 | Clay | John Isner | 4-6 | 7-65 | 7-5 |