By surface
| Surface | John Isner | Marcos Giron |
|---|---|---|
| Hard | 2 | 0 |
All meetings (2)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2020-02-24 | ATP | Acapulco | Round of 16 | Hard | John Isner | 6-3 | 7-64 | |||
| 2014-08-25 | ATP | US Open | Round of 128 | Hard | John Isner | 7-65 | 6-2 | 7-62 |