Argentinian Mayer is the clay tournament's fifth seed.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2019 |
Rio Open
|
1/8 | Albert Ramos-Vinolas |
6-3
5-7 3-6 |
| 2019 |
Rio Open
|
1/16 | Federico Delbonis |
3-6
5-7 |
| 2019 |
Argentina Open
|
1/16 | Jaume Munar |
6-2
2-6 6-1 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2019 |
Open 13 Provence, Qualification
|
1/8 | Egor Gerasimov |
6-4
4-6 6-3 |
| 2019 |
Cherbourg
|
Quarter Finals | Steve Darcis |
3-6
5-7 |
| 2019 |
Cherbourg
|
1/8 | Lukas Rosol |
6-3
3-6 6-0 |
