Stuttgart — past champions and tournament history, with AI match predictions published when the draw is live.
| Year | Champion | Final score |
|---|---|---|
| 2026 | B. Shelton | 2 - 1 |
| 2025 | T. Fritz | 0 - 2 |
| 2022 | M. Berrettini | 1 - 2 |
| 2021 | M. Cilic | 2 - 0 |
| Year | Champion | Final score |
|---|---|---|
| 2026 | E. Rybakina | 2 - 0 |
| 2025 | J. Ostapenko | 0 - 2 |
| 2022 | I. Swiatek | 2 - 0 |