| Champ: |  Alex de Minaur |
| Runner: |  Taylor Fritz |
| Score: | 6–3, 7–6(7–2) |
| Edition: | 2019 |
| Type: | singles doubles |
| After Year: | 2021 |
| After Name: | Atlanta Open |
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John Isner was the two-time defending champion and had won the title five times in the last six years,[1] but he lost in the second round to Reilly Opelka. This was only the second time out of ten in the Atlanta Open's history that Isner failed to reach the singles final.
Alex de Minaur won the title, defeating Taylor Fritz in the final, 6–3, 7–6(7–2).
The top four seeds received a bye into the second round.