The 27-year-old Sandgren, ranked 63rd, was playing in his second tour final.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2019 |
Delray Beach Open
|
1/16 | Reilly Opelka |
4-6
0-6 |
| 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, Qualification WTA
|
1/48 (Special Qual) | Tatjana Maria |
6-1
6-2 |
| 2016 |
Brisbane International, Qualification
|
1/16 | Sachia Vickery |
6-2
3-6 2-6 |
