The 27-year-old Sandgren, ranked 63rd, was playing in his second tour final.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2019 |
Argentina Open, Qualification
|
Quarter Finals | Rogerio Dutra Silva |
7-6
6-7 2-6 |
| 2019 |
Argentina Open, Qualification
|
1/8 | Cameron Norrie |
6-4
4-6 7-5 |
| 2019 |
Cordoba Open
|
1/16 | Pedro Cachin |
4-6
4-6 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2017 |
BGL BNP Paribas Luxembourg Open, Qualification
|
1/16 | Pauline Parmentier |
6-0
6-3 |
| 2017 |
Generali Ladies Linz, Qualification
|
1/16 | Mihaela Buzarnescu |
6-4
6-2 |
| 2017 |
US Open, Qualification WTA
|
1/32 | Mariana Duque Mariño |
6-4
6-3 |
| 2017 |
US Open, Qualification WTA
|
1/64 | Alexa Glatch |
6-3
7-5 |
