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

Year	Champion	Runner-up	Score
1991	Jan Apell Raviv Weidenfeld	Sébastien Leblanc Markus Naewie	6–3, 6–3
1992	David Prinosil Richard Vogel	Robert Novotny Milan Trněný	6–3, 6–4
1993	Filip Dewulf Tom Vanhoudt	Jordi Arrese Francisco Roig	6–7, 6–2, 6–3
1994	Hendrik Jan Davids Stephen Noteboom	Wayne Arthurs Simon Youl	4–6, 6–3, 7–6
1995	Pablo Albano Vojtěch Flégl	Emilio Benfele Álvarez Jose Imaz-Ruiz	6–4, 6–3
1996	Pablo Albano László Markovits	Cristian Brandi Filippo Messori	6–4, 6–1
1997	Lucas Arnold Ker Tom Vanhoudt	Alberto Martín Albert Portas	6–1, 6–2
1998	Dinu-Mihai Pescariu Albert Portas	Lan Bale Nebojša Đorđević	6–3, 6–4
1999	Nuno Marques Tom Vanhoudt	Albert Portas German Puentes-Alcaniz	6–2, 6–2
2000	Tomáš Cibulec Leoš Friedl	Petr Kovačka Pavel Kudrnáč	6–4, 4–6, 6–4
2001	Tim Crichton Todd Perry	Shaun Rudman Jeff Williams	6–4, 6–4
2002	Mariusz Fyrstenberg Marcin Matkowski	Jan Frode Andersen Oliver Marach	6–3, 6–4
2003	Noam Behr Ota Fukárek	Karsten Braasch Johan Landsberg	6–3, 6–2
2004	Julian Knowle Alexander Peya	Emilio Benfele Álvarez Josh Goffi	6–4, 6–2
2005	Julian Knowle Alexander Peya	Johan Landsberg Jean-Claude Scherrer	3–6, 6–1, 6–2
2006	Ross Hutchins Jonathan Marray	James Auckland Jamie Delgado	6–7, 6–4, [15–13]
2007	Sebastián Decoud Yuri Schukin	Jérémy Chardy Predrag Rusevski	3–6, 6–3, [10–7]
2008	Gerald Melzer Jürgen Melzer	Julien Jeanpierre Nicolas Renavand	1–6, 7–6, [10–4]

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