| s Tennis Masters Challenger | |
|---|---|
| Defunct tennis tournament | |
| Location | Graz, Austria | 
| Category | ATP Challenger Series | 
| Surface | Clay / Outdoors | 
| Draw | 32S/32Q/16D | 
| Prize money | €30,000 | 
| Website | Official Website | 
The s Tennis Masters Challenger was a tennis tournament held in Graz, Austria from 1991 to 2008. The event was part of the ATP Challenger Series and was played on outdoor clay courts.
| Year | Champion | Runner-up | Score | 
|---|---|---|---|
| 1991 |  Thomas Buchmayer |  Thierry Guardiola | 6–3, 6–2 | 
| 1992 |  Guillermo Pérez Roldán |  Karel Nováček | 3–6, 6–2, 7–5 | 
| 1993 |  Alberto Berasategui |  Carlos Costa | 6–4, 6–3 | 
| 1994 |  Francisco Clavet |  Gilbert Schaller | 6–2, 2–6, 6–4 | 
| 1995 |  Carlos Costa |  Jiří Novák | 6–4, 6–3 | 
| 1996 |  Juan Albert Viloca |  Dominik Hrbatý | 6–7, 6–2, 6–2 | 
| 1997 |  Radomír Vašek |  Albert Portas | 6–1, 6–3 | 
| 1998 |  Carlos Costa |  Albert Portas | 7–5, 7–6 | 
| 1999 |  Tomáš Zíb |  Juan Carlos Ferrero | 7–6, 6–1 | 
| 2000 |  Michal Tabara |  David Sánchez Muñoz | 7–5, 6–0 | 
| 2001 |  Julian Knowle |  Yuri Schukin | 6–3, 6–2 | 
| 2002 |  Olivier Mutis |  Filippo Volandri | 6–3, 6–2 | 
| 2003 |  Tomáš Berdych |  Julian Knowle | 6–4, 5–7, 6–2 | 
| 2004 |  Jan Minář |  Gilles Simon | 3–6, 6–3, 7–5 | 
| 2005 |  Robin Vik |  Roko Karanušić | 6–4, 4–2, retired | 
| 2006 |  Florian Mayer |  Rainer Schüttler | 6–4, 5–7, 6–2 | 
| 2007 |  Victor Hănescu |  Leonardo Mayer | 7–6, 6–2 | 
| 2008 |  Jérémy Chardy |  Sergio Roitman | 6–2, 6–1 |