Prosperita Open
| Ostra Group Open | |
|---|---|
| 2025 Ostra Group Open | |
| ATP Challenger Tour | |
| Event name | Ostra Group Open (2021-), Prosperita Open |
| Location | Ostrava, Czech Republic |
| Venue | SC Ostrava |
| Category | ATP Challenger Tour |
| Surface | Clay |
| Draw | 32S/30Q/16D |
| Prize money | €91,250 (2025), 42,500+H |
| Website | Website |
The Ostra Group Open, formerly known as Prosperita Open, is a professional tennis tournament played on outdoor red clay courts. It is currently part of the Association of Tennis Professionals (ATP) Challenger Tour. It has been held annually in Ostrava, Czech Republic, since 2004.
Pavel Šnobel and Sergiy Stakhovsky have won two doubles titles each. Stakhovsky won his second doubles title 13 years after his first win.
Jan Hájek, Stéphane Robert, and Andrey Kuznetsov won both singles and doubles title the same year.