Isner lost his fourth-round match to Roberto Bautista Agut in Miami on Tuesday.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2015 |
BNP Paribas Masters
|
1/32 | Viktor Troicki |
2-6
3-6 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2021 |
Dubai Tennis Championships, Qualification
|
1/6 (Special Qual) | Emil Ruusuvuori |
6-2
6-2 |
| 2021 |
Dubai Tennis Championships, Qualification
|
1/12 (Special Qual) | Viktor Troicki |
7-5
6-0 |
| 2021 |
Open 13 Provence, Qualification
|
1/8 | Steven Diez |
6-3
2-6 2-6 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2021 |
Biella 4
|
1/16 | Andreas Seppi |
6-4
3-6 3-6 |
