By surface
| Surface | John Isner | Thiago Monteiro |
|---|---|---|
| Hard | 2 | 0 |
All meetings (2)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2021-01-04 | ATP | Delray Beach | Round of 16 | Hard | John Isner | 6-4 | 7-64 | |||
| 2020-01-20 | ATP | Australian Open | Round of 128 | Hard | John Isner | 6-75 | 7-64 | 7-67 | 7-65 |