| Information unavailable 1916–1936 |
| 1937 | West Germany Edgar Dettmar | West Germany Edmund Bartkowiak | 6–3, 4–6, 6–4, 6–2 |
| 1949 | West Germany Werner Breuthner | West Germany Otto Fürst | 6–3, 6–3, 4–6, 6–2 |
| 1950 | West Germany Helmut Gulcz | Czech Republic Jan Dostal | 2–6, 6–3, 6–3, 6–1 |
| 1951 | West Germany Otto Fürst | West Germany Peter De Vos | 6–3, 6–3 |
| 1952 | Socialist Federal Republic of Yugoslavia Milan Branović | France Jacques Thomas | 4–6, 10–8, 7–5, ret. |
| 1953 | Denmark Torben Ulrich | Sweden Bengt Axelsson | 2–6, 6–3, 6–2, 6–0 |
| 1954 | West Germany Gottfried von Cramm | Canada Robert Bédard | 6–4, 6–8, 6–2 |
| 1955 | United States Hugh Stewart | United States Tony Vincent | 6–2, 8–6, 6–4 |
| 1956 | Australia Jack Arkinstall | United States Tony Vincent | 6–2, 8–6, 6–4 |
| 1957 | Austria Ladislav Legenstein | Socialist Federal Republic of Yugoslavia Milan Branović | |
| 1958 | Sweden Ulf Schmidt | Belgium Jacques Brichant | 6–4, 6–4, 7–9, 6–1 |
| 1959 | Australia Warren Woodcock | Denmark Torben Ulrich | 6–3, 6–2, 6–3 |
| 1960 | Sweden Ulf Schmidt (2) | Australia Warren Woodcock | 6–2, 2–6, 6–4, 1–6, 6–3 |
| 1961 | Australia Warren Woodcock (2) | Australia Barry Phillips-Moore | 2–6, 5–7, 6–4, 6–2, 7–5 |
| 1962 | Sweden Ulf Schmidt (3) | Sweden Jan-Erik Lundqvist | 6–4, 7–5 |
| 1963 | South Africa Gordon Forbes | Australia Warren Woodcock | 6–1, 8–6, 6–3 |
| 1964 | South Africa Cliff Drysdale | South Africa Keith Diepraam | 6–1, 6–3 |
| 1965 | South Africa Cliff Drysdale (2) | West Germany Wilhelm Bungert | 6–0, 6–1, 6–1 |
| 1966 | South Africa Frew McMillan | South Africa Keith Diepraam | 6–4, 7–5 |
| 1967 | Australia Roy Emerson | Romania Ion Țiriac | 1–6, 6–3, 6–4, 6–2 |
| ↓ Open Era ↓ |
| 1968 | India Ramanathan Krishnan | West Germany Detlev Nitsche | 6–2, 6–8, 6–4, retired |
| 1969 | West Germany Christian Kuhnke | West Germany Wilhelm Bungert | 2–6, 6–2, 6–0, 6–2 |
| 1970 | Not held |
| 1971 | Australia Barry Phillips-Moore | Hungary István Gulyás | 6–4, 6–3, 6–4 |
| 1972 | West Germany Attila Korpás | Socialist Federal Republic of Yugoslavia Zlatko Ivančić | 6–8, 6–2, 6–3, 6–4 |
| 1973 | West Germany Harald Elschenbroich | West Germany Hans-Jürgen Pohmann | 2–6, 6–0, 6–2, 6–4 |
| 1974 | West Germany Hans-Joachim Plötz | France Jacques Thamin | 6–1, 2–6, 6–4, 6–4 |
| 1975 | | West Germany Jürgen Fassbender Australia Richard Crealy | Final interrupted |
| 1976 | West Germany Attila Korpás (2) | Socialist Federal Republic of Yugoslavia Zlatko Ivančić | 6–4, 6-4, 4–6, 2–6, 6–4 |
| 1977 | West Germany Jürgen Fassbender | West Germany Attila Korpás | walkover |
| ↓Grand Prix circuit↓ |
| 1978 | West Germany Ulrich Pinner | Australia Kim Warwick | 6–4, 6–2, 7–6 |
| 1979 | Czechoslovakia Tomáš Šmíd | West Germany Ulrich Pinner | 6–4, 6–0, 6–2 |
| 1980 | United States Vitas Gerulaitis | Poland Wojtek Fibak | 6–2, 7–5, 6–2 |
| 1981 | Sweden Björn Borg | Czechoslovakia Ivan Lendl | 1–6, 7–6, 6–2, 6–4 |
| 1982 | India Ramesh Krishnan | United States Sandy Mayer | 5–7, 6–3, 6–3, 7–6 |
| 1983 | Spain José Higueras | Switzerland Heinz Günthardt | 6–1, 6–1, 7–6 |
| 1984 | France Henri Leconte | United States Gene Mayer | 7–6(11–9), 6–0, 1–6, 6–1 |
| 1985 | Czechoslovakia Ivan Lendl | United States Brad Gilbert | 6–4, 6–0 |
| 1986 | Argentina Martín Jaite | Sweden Jonas Svensson | 7–5, 6–2 |
| 1987 | Czechoslovakia Miloslav Mečíř | Sweden Jan Gunnarsson | 6–0, 6–2 |
| 1988 | United States Andre Agassi | Ecuador Andrés Gómez | 6–4, 6–2 |
| 1989 | Argentina Martín Jaite | Socialist Federal Republic of Yugoslavia Goran Prpić | 6–3, 6–2 |
| ↓ATP Tour 500↓ |
| 1990 | Socialist Federal Republic of Yugoslavia Goran Ivanišević | Argentina Guillermo Pérez Roldán | 6–7(2–7), 6–1, 6–4, 7–6(7–5) |
| 1991 | Germany Michael Stich | Argentina Alberto Mancini | 1–6, 7–6(11–9), 6–4, 6–2 |
| 1992 | Ukraine Andrei Medvedev | South Africa Wayne Ferreira | 6–1, 6–4, 6–7(5–7), 2–6, 6–1 |
| 1993 | Sweden Magnus Gustafsson | Germany Michael Stich | 6–3, 6–4, 3–6, 4–6, 6–4 |
| 1994 | Spain Alberto Berasategui | Italy Andrea Gaudenzi | 7–5, 6–3, 7–6(7–5) |
| 1995 | Austria Thomas Muster | Sweden Jan Apell | 6–2, 6–2 |
| 1996 | Austria Thomas Muster (2) | Russia Yevgeny Kafelnikov | 6–2, 6–2, 6–4 |
| 1997 | Spain Álex Corretja | Slovakia Karol Kučera | 6–2, 7–5 |
| 1998 | Brazil Gustavo Kuerten | Slovakia Karol Kučera | 4–6, 6–2, 6–4 |
| 1999 | Sweden Magnus Norman | Germany Tommy Haas | 6–7(6–8), 4–6, 7–6(9–7), 6–0, 6–3 |
| 2000 | Argentina Franco Squillari | Argentina Gastón Gaudio | 6–2, 3–6, 4–6, 6–4, 6–2 |
| 2001 | Brazil Gustavo Kuerten (2) | Argentina Guillermo Cañas | 6–3, 6–2, 6–4 |
| ↓ATP Tour 250↓ |
| 2002 | Russia Mikhail Youzhny | Argentina Guillermo Cañas | 6–3, 3–6, 3–6, 6–4, 6–4 |
| ↓ATP Tour 500↓ |
| 2003 | Argentina Guillermo Coria | Spain Tommy Robredo | 6–2, 6–2, 6–1 |
| 2004 | Argentina Guillermo Cañas | Argentina Gastón Gaudio | 5–7, 6–2, 6–0, 1–6, 6–3 |
| 2005 | Spain Rafael Nadal | Argentina Gastón Gaudio | 6–3, 6–3, 6–4 |
| 2006 | Spain David Ferrer | Argentina José Acasuso | 6–4, 3–6, 6–7(3–7), 7–5, 6–4 |
| 2007 | Spain Rafael Nadal (2) | Switzerland Stan Wawrinka | 6–4, 7–5 |
| 2008 | Argentina Juan Martín del Potro | France Richard Gasquet | 6–4, 7–5 |
| ↓ATP Tour 250↓ |
| 2009 | France Jérémy Chardy | Romania Victor Hănescu | 1–6, 6–3, 6–4 |
| 2010 | Spain Albert Montañés | France Gaël Monfils | 6–2, 1–2, RET. |
| 2011 | Spain Juan Carlos Ferrero | Spain Pablo Andújar | 6–4, 6–0 |
| 2012 | Serbia Janko Tipsarević | Argentina Juan Mónaco | 6–4, 5–7, 6–3 |
| 2013 | Italy Fabio Fognini | Germany Philipp Kohlschreiber | 5–7, 6–4, 6–4 |
| 2014 | Spain Roberto Bautista Agut | Czech Republic Lukáš Rosol | 6–3, 4–6, 6–2 |
| 2015 | Spain Rafael Nadal (3) | Serbia Viktor Troicki | 7–6(7–3), 6–3 |
| 2016 | Austria Dominic Thiem | Germany Philipp Kohlschreiber | 6–7(2–7), 6–4, 6–4 |
| 2017 | France Lucas Pouille | Spain Feliciano López | 4–6, 7–6(7–5), 6–4 |
| 2018 | Switzerland Roger Federer | Canada Milos Raonic | 6–4, 7–6(7–3) |
| 2019 | Italy Matteo Berrettini | Canada Félix Auger-Aliassime | 6–4, 7–6(13–11) |
| 2020 | Not held due to COVID-19 pandemic |
| 2021 | Croatia Marin Čilić | Canada Félix Auger-Aliassime | 7–6(7–2), 6–3 |
| 2022 | Italy Matteo Berrettini (2) | United Kingdom Andy Murray | 6–4, 5–7, 6–3 |
| 2023 | United States Frances Tiafoe | Germany Jan-Lennard Struff | 4–6, 7–6(7–1), 7–6(10–8) |
| 2024 | United Kingdom Jack Draper | Italy Matteo Berrettini | 3–6, 7–6(7–5), 6–4 |
| 2025 | United States Taylor Fritz | Germany Alexander Zverev | 6–3, 7–6(7–0) |
| 2026 | United States Ben Shelton | United States Taylor Fritz | 6–4, 2–6, 6–4 |