The 27-year-old Sandgren, ranked 63rd, was playing in his second tour final.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2019 |
New York Open
|
1/16 | Paolo Lorenzi |
6-7
7-6 4-6 |
| 2019 |
Australian Open ATP
|
1/64 | Yoshihito Nishioka |
6-4
7-6 4-6 6-4 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2017 |
Australian Open WTA
|
1/64 | Su-Wei Hsieh |
3-6
0-2 |
| 2016 |
US Open WTA
United States, New York, Flushing Meadows |
1/64 | Johanna Larsson |
4-6
2-6 |
| 2016 |
Cincinnati Masters, Qualification
|
1/12 (Special Qual) | Kurumi Nara |
6-1
7-5 |
| 2016 |
Cincinnati Masters, Qualification
|
1/24 (Special Qual) | Karin Knapp |
7-6
3-6 6-4 |
