It's the 14th-ranked American's third straight major in which he's lost his opener.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2018 |
Open de Moselle
|
1/16 | Constant Lestienne |
6-3
7-5 |
| 2018 |
US Open, Qualification ATP
|
1/64 | Victor Estrella Burgos |
3-6
1-6 |
| 2018 |
Pullach
|
1/8 | Mikael Ymer |
6-7
4-6 |
| 2018 |
Pullach
|
1/16 | Jurgen Zopp |
6-4
3-6 6-1 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2018 |
Taiwan Open
|
1/8 | Yulia Putintseva |
6-3
7-6 |
| 2018 |
Taiwan Open
|
1/16 | Kai-Chen Chang |
5-7
2-6 |
| 2017 |
Prudential Hong Kong Tennis Open
|
1/16 | Qiang Wang |
3-6
0-6 |
| 2017 |
China Open, Qualification
|
1/16 | Magda Linette |
2-6
2-6 |
