Johnson cramped up in the third set, but fought his way past Thomaz Bellucci.
| 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 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2019 |
Charlottesville
|
1/16 | Christopher O'connell |
6-3
6-4 |
