The American could be well out of the Top 100 by season's end.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2014 |
Scheveningen
|
1/8 | Joao Souza |
7-5
6-2 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2018 |
Rolex Paris Masters
|
1/16 | Kevin Anderson |
6-3
6-7 7-6 |
| 2018 |
Rolex Paris Masters
|
1/32 | Nikoloz Basilashvili |
6-4
0-0 |
| 2018 |
Erste Bank Open
|
1/16 | Kevin Anderson |
6-4
6-7 3-6 |
| 2018 |
Shanghai Rolex Masters
|
1/16 | Alexander Zverev |
5-7
4-6 |
| 2018 |
Shanghai Rolex Masters
|
1/32 | Nikoloz Basilashvili |
2-6
2-6 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2018 |
Tampere
|
1/16 | Kimmer Coppejans |
6-3
6-4 |
