By surface
| Surface | John Isner | Tennys Sandgren |
|---|---|---|
| Hard | 2 | 0 |
All meetings (2)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2020-01-13 | ATP | Auckland | Round of 16 | Hard | John Isner | 7-63 | 6-71 | 6-3 | ||
| 2018-10-15 | ATP | Stockholm | Quarterfinal | Hard | John Isner | 7-68 | 6-75 | 7-62 |