Isner lost his fourth-round match to Roberto Bautista Agut in Miami on Tuesday.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2021 |
Miami Open
|
1/64 | Yen-Hsun Lu |
3-6
4-6 |
| 2021 |
Australian Open ATP
|
1/64 | Lorenzo Sonego |
5-7
4-6 4-6 |
| 2021 |
Great Ocean Road Open
|
1/16 | Stefano Travaglia |
7-6
3-6 4-6 |
| 2021 |
Great Ocean Road Open
|
1/32 | Sam Querrey |
4-6
7-6 6-0 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2019 |
TEB BNP Paribas Istanbul Cup, Qualification
|
1/6 (Special Qual) | Kateryna Kozlova |
6-2
6-4 |
| 2019 |
TEB BNP Paribas Istanbul Cup, Qualification
|
1/12 (Special Qual) | Alexandra Dulgheru |
6-3
2-6 3-6 |
| 2019 |
Dubai Duty Free Tennis Championships, Qualification
|
1/16 | Jennifer Brady |
2-6
5-7 |
| 2019 |
Qatar Total Open, Qualification
|
1/16 | Lin Zhu |
6-4
1-6 4-6 |
