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Stuttgart Open

The Stuttgart Open, officially titled the BOSS OPEN since 2022 due to sponsorship by Hugo Boss, is an annual ATP Tour 250 men's professional tennis tournament held on outdoor grass courts at the Tennis Club Weissenhof in Stuttgart, Germany. It features singles and doubles competitions with a total prize money of €751,630, attracting top players as a key grass-court event in the lead-up to Wimbledon. Established in 1916 as the International Weissenhof Tournament, the event is one of Europe's oldest grass-court competitions, predating the modern ATP Tour era. It joined the ATP circuit in 1970 and was known as the Mercedes Cup from 1979 to 2021, reflecting sponsorship by Mercedes-Benz during that period. The tournament typically occurs in early to mid-June, with the 2025 edition held from June 9 to 15, utilizing five grass courts at the Weissenhof venue, which offers panoramic views of Stuttgart's Killesberg hill. Over its history, the Stuttgart Open has hosted legendary players and produced memorable champions, including Rafael Nadal with a record three singles titles (2004–2007) and Roger Federer, who won at age 36 in 2018 as the oldest champion. Other notable winners include Ivan Lendl, Boris Becker, and more recent victors like Jack Draper in 2024 and Taylor Fritz in 2025. The event's doubles competition has also seen success from pairs such as Rafael Matos and Marcelo Melo in 2024, and Santiago González and Austin Krajicek in 2025. Organized by e|motion sports, it emphasizes tradition while incorporating modern fan experiences, including side events and live streaming via Tennis TV. The tournament's prestige lies in its role as a grass-court opener, often featuring German stars like Alexander Zverev and rising talents such as Stefanos Tsitsipas and Frances Tiafoe.

Overview

Tournament details

The Stuttgart Open, officially known as the BOSS Open since 2022 under sponsorship by Hugo Boss, is a professional men's tennis tournament classified in the ATP 250 category. It has held ATP 250 status since 2009, following periods as an ATP 500 event from 1990 to 2001 and 2003 to 2008, and as a Grand Prix circuit tournament from 1970 to 1989. The event is held annually in June on outdoor grass courts, a surface adopted in 2015 after being played on clay through 2014. This change aligned with the ATP's expansion of the pre-Wimbledon grass-court schedule. The 2025 edition takes place from June 9 to 15, offering total prize money of €751,630. The singles competition features a 28-player main draw, including 8 seeds and 4 qualifiers, while the doubles event includes 16 teams.

Categories and format

The Stuttgart Open is open to players ranked on the ATP Tour, with entry determined by their current standings. The singles event features a main draw of 28 players, including four qualifiers who advance from a separate qualifying tournament, and all matches are contested in a best-of-three sets format. Tiebreaks are employed at 6-6 in every set to decide the outcome. In doubles, the competition consists of a 16-team main draw, also played as best-of-three sets, with no-ad scoring introduced in the final set under the ATP's 2006 rule change aimed at shortening match durations. A 10-point match tiebreak replaces a full third set if necessary, further streamlining play. Ranking points are awarded based on performance, with the singles champion earning 250 points, the finalist 165, semifinalists 100, quarterfinalists 50, second-round (round of 16) participants 25, and first-round losers 1 point; the doubles distribution mirrors this scale, capping at 250 for the winning team. Qualifying rounds for singles occur immediately prior to the main draw, typically over the preceding weekend, providing opportunities for players outside the direct acceptance list to compete. Up to four wild cards are available for the singles main draw, commonly allocated to German players or rising international talents to enhance local engagement and support emerging careers. The grass surface fosters a fast-paced game characterized by serve dominance, influencing tactical approaches throughout the event.

History

Origins and early development

The Stuttgart Open traces its roots to 1898, with the modern iteration established in 1916 as the International Weissenhof Tournament, an international tennis event held on clay courts at the newly opened Tennis Club Weissenhof in Germany. The tournament quickly became a key fixture for regional players, emphasizing baseline rallies suited to the red clay surface, though it was primarily contested by national and European competitors in its initial years. The event faced significant disruptions due to the two World Wars, with no editions held between 1917 and 1948 amid the conflicts and their aftermath. It resumed in 1949 under the name Stuttgart International Championships, marking the post-war revival of organized tennis in the region and focusing once again on clay-court play at local venues before solidifying its base at Weissenhof. Werner Breuthner claimed the inaugural post-war singles title that year, defeating Otto Fürst in the final. Throughout the 1950s and 1960s, the tournament was held annually, gradually elevating its status within the European tennis circuit by attracting a mix of German and international talent, including baseline specialists who thrived on the clay. The Tennis Club Weissenhof served as its longstanding home from the outset, providing a stable venue that supported the event's growth amid the era's amateur-dominated landscape. By the late 1960s, it had established itself as a respected stop for developing players. The tournament transitioned toward the professional era in 1970.

ATP Tour integration and modern era

The Stuttgart Open integrated into the professional tennis landscape in 1970, aligning with the Open Era and initially operating as an independent event before formally joining the Men's Grand Prix circuit in 1978. This period marked the tournament's transition from amateur roots to a key stop on the evolving ATP schedule, attracting top players and establishing its reputation in European tennis. By 1990, it was elevated to the ATP Championship Series—equivalent to the modern ATP 500 level—offering 500 ranking points and underscoring its growing prestige within the tour's tiered structure. Sponsorship played a pivotal role in the tournament's modern identity, particularly through its long association with Mercedes-Benz, the automotive giant headquartered near Stuttgart. From 1979 to 2021, the event was known as the Mercedes Cup, with winners receiving a Mercedes car alongside prize money, symbolizing the region's industrial heritage and boosting the tournament's allure. In 2009, amid ATP Tour restructuring, the event was downgraded to ATP 250 status, reducing its points allocation but maintaining its competitive edge. The turn of the decade brought further evolution: in 2022, following the end of the Mercedes sponsorship, it rebranded as the BOSS Open under Hugo Boss, a German fashion house, continuing its tradition of corporate partnerships tied to national industry. A significant shift occurred in 2015 when the tournament changed from clay to grass courts, timed to coincide with the Halle Open's upgrade to ATP 500 status and an expanded pre-Wimbledon grass-court window following the French Open. This move addressed a calendar gap, providing players with an additional high-quality grass event for Wimbledon preparation while leveraging Germany's strong grass-court tradition. The tournament was cancelled in 2020 due to the COVID-19 pandemic. The 2025 edition, the 47th since joining the ATP Tour in 1978, exemplified this modern era under the BOSS Open banner, drawing elite competitors and reinforcing its role as a vital ATP 250 stop. The pre-grass era highlighted the dominance of clay-court specialists, with Rafael Nadal securing three titles in 2005, 2007, and—remarkably—the inaugural grass edition in 2015, adapting seamlessly to the surface change and becoming the first player to win on both substrates at the event. This period underscored the tournament's adaptability, bridging clay-era legacies with its contemporary grass-court focus.

Venue

Location and club history

The Tennis Club Weissenhof is situated at Parlerstraße 102, 70192 Stuttgart, Germany, in the Killesberg district, with coordinates 48°47′46″N 9°10′08″E. Positioned near the city center amid green surroundings, the venue is readily accessible via Stuttgart's public transport network, including nearby U-Bahn and bus lines. The club traces its origins to 1894, when it was established as the Stuttgarter Lawn-Tennis-Club; it relocated to its current Killesberg site in 1914 and was subsequently renamed Tennis Club Weissenhof. With around 1,000 members, it ranks among Germany's largest and most traditional tennis clubs. The facility has hosted the Stuttgart Open—known historically as the International Weissenhof Tournament—since 1916, establishing it as the event's permanent home. Prior to the ATP Tour era, the club served as a key site for significant tennis events in Germany, including multiple Davis Cup ties such as the 2011 World Group quarterfinal between Germany and France. It also hosted national championships and other domestic competitions, contributing to its legacy in German tennis. The venue accommodates approximately 6,000 spectators across its stands, fostering an intimate atmosphere that enhances the spectator experience during matches. In 2015, the club introduced grass courts to align with the tournament's shift to a grass surface.

Facilities and courts

The Tennis Club Weissenhof serves as the primary venue for the Stuttgart Open, featuring a Center Court known as Weissenhof Court with a seating capacity of approximately 6,500 spectators. This main show court offers an intimate atmosphere with panoramic views of Stuttgart's Killesberg district, accommodating the majority of tournament matches during the event. Since 2015, the court has utilized a grass surface to align with the ATP Tour's grass-court season, marking a significant shift from the previous clay setup. In addition to the Center Court, the venue provides five grass courts in total for the tournament, including two outer courts that host early-round matches and practice sessions. These courts ensure efficient scheduling for the ATP 250 event, allowing players to acclimate to the grass surface early in the week following the French Open. The grass installation in 2015 involved comprehensive renovations to adapt the facilities to the European climate, including enhanced maintenance infrastructure for optimal play conditions. A media center facilitates broadcasts and press operations, equipped with modern production facilities to cover the tournament's proceedings. These features contribute to a professional environment tailored for elite-level grass-court tennis. Sustainability initiatives at the club incorporate solar panels for renewable energy generation, rainwater harvesting for irrigation, and comprehensive recycling programs, reflecting eco-friendly practices adopted in the 2010s to minimize environmental impact. These measures align with broader efforts in European sports venues to promote green operations during events like the Stuttgart Open.

Past champions and finals

Singles

The singles competition at the Stuttgart Open has been a cornerstone of the tournament since its early editions. Originally contested on clay courts, the event emphasized endurance and baseline rallies, producing champions like multiple-time winner Rafael Nadal, who secured three titles across both surfaces. The shift to grass in 2015 transformed the dynamics, promoting aggressive serving and quick points, as exemplified by the 2025 champion's undefeated set record in the tournament. Pre-ATP highlights include the 1949 edition, where Werner Breuthner claimed the title against local competition, marking the post-war revival of the event at the Tennis Club Weissenhof, though detailed scores from that era are scarce. The following table summarizes key singles finals results, focusing on the era from 1968 onward, with complete outcomes where available; earlier years prior to 1968 featured sporadic international play dominated by European players. For a full historical list, see the tournament's origins in the History section.
YearChampionRunner-upScore
2025Taylor Fritz (USA)Alexander Zverev (GER)6–3, 7–6(7–0)
2024Jack Draper (GBR)Matteo Berrettini (ITA)3–6, 7–6(7–3), 6–4
2023Frances Tiafoe (USA)Jan-Lennard Struff (GER)4–6, 7–6(7–1), 7–6(10–8)
2022Matteo Berrettini (ITA)Andy Murray (GBR)6–4, 5–7, 6–3
2021Marin Čilić (CRO)Félix Auger-Aliassime (CAN)7–6(7–5), 6–3
2020Not held (COVID-19)
2019Matteo Berrettini (ITA)Dominic Thiem (AUT)6–3, 3–6, 6–7(4–7), 6–4, 6–4
2018Dominic Thiem (AUT)Philipp Kohlschreiber (GER)6–7(5–7), 6–4, 6–4
2017Lucas Pouille (FRA)Tomáš Berdych (CZE)6–4, 3–6, 6–3
2016Dominic Thiem (AUT)Philipp Kohlschreiber (GER)7–6(7–2), 4–6, 6–3
2015Rafael Nadal (ESP)Viktor Troicki (SRB)7–6(7–3), 6–3
2014Roberto Bautista Agut (ESP)Lukáš Rosol (CZE)6–3, 6–7(3–7), 7–5
2013Fabio Fognini (ITA)Philipp Kohlschreiber (GER)5–7, 6–4, 6–4
2012Janko Tipsarević (SRB)Juan Mónaco (ARG)6–4, 5–7, 6–3
2011Juan Carlos Ferrero (ESP)Pablo Andújar (ESP)6–4, 6–0
2010Albert Montañés (ESP)Gaël Monfils (FRA)6–2, 1–2 ret.
2009Jérémy Chardy (FRA)Victor Hănescu (ROU)1–6, 6–3, 6–4
2008Juan Martín del Potro (ARG)Richard Gasquet (FRA)6–4, 7–5
2007Rafael Nadal (ESP)Stan Wawrinka (SUI)6–4, 7–5
2006David Ferrer (ESP)José Acasuso (ARG)6–4, 3–6, 6–7(3–7), 7–5, 6–4
2005Rafael Nadal (ESP)Gastón Gaudio (ARG)6–3, 6–3, 6–4
2004Guillermo Cañas (ARG)Gastón Gaudio (ARG)5–7, 6–2, 6–0, 1–6, 6–3
2003Guillermo Coria (ARG)Tommy Robredo (ESP)6–2, 6–2, 6–1
2002Mikhail Youzhny (RUS)Guillermo Cañas (ARG)6–3, 3–6, 3–6, 6–4, 6–4
2001Gustavo Kuerten (BRA)Guillermo Cañas (ARG)6–3, 6–2, 6–4
2000Franco Squillari (ARG)Gastón Gaudio (ARG)6–2, 3–6, 4–6, 6–4, 6–2
1999Magnus Norman (SWE)Tommy Haas (GER)6–7(6–8), 4–6, 7–6(9–7), 6–0, 6–3
1998Gustavo Kuerten (BRA)Karol Kučera (SVK)4–6, 6–2, 6–4
1997Álex Corretja (ESP)Karol Kučera (SVK)6–2, 7–5
1996Thomas Muster (AUT)Yevgeny Kafelnikov (RUS)6–2, 6–2, 6–4
1995Thomas Muster (AUT)Jan Apell (SWE)6–2, 6–2
1994Alberto Berasategui (ESP)Andrea Gaudenzi (ITA)7–5, 6–3, 7–6(7–5)
1993Magnus Gustafsson (SWE)Michael Stich (GER)6–3, 6–4, 3–6, 4–6, 6–4
1992Andrei Medvedev (UKR)Wayne Ferreira (RSA)6–1, 6–4, 6–7(5–7), 2–6, 6–1
1991Michael Stich (GER)Alberto Mancini (ARG)1–6, 7–6(11–9), 6–4, 6–2
1990Goran Ivanišević (YUG)Guillermo Pérez Roldán (ARG)6–7(2–7), 6–1, 6–4, 7–6(7–5)
1989Martín Jaite (ARG)Goran Prpić (YUG)6–3, 6–2
1988Andre Agassi (USA)Andrés Gómez (ECU)6–4, 6–2
1987Miloslav Mečíř (TCH)Jan Gunnarsson (SWE)6–0, 6–2
1986Martín Jaite (ARG)Jonas Svensson (SWE)7–5, 6–2
1985Ivan Lendl (TCH)Brad Gilbert (USA)6–4, 6–0
1984Henri Leconte (FRA)Gene Mayer (USA)7–6(11–9), 6–0, 1–6, 6–1
1983José Higueras (ESP)Heinz Günthardt (SUI)6–1, 6–1, 7–6
1982Ramesh Krishnan (IND)Sandy Mayer (USA)5–7, 6–3, 6–3, 7–6
1981Björn Borg (SWE)Ivan Lendl (TCH)1–6, 7–6, 6–2, 6–4
1980Vitas Gerulaitis (USA)Wojtek Fibak (POL)6–2, 7–5, 6–2
1979Tomáš Šmíd (TCH)Ulrich Pinner (GER)6–4, 6–0, 6–2
1978Ulrich Pinner (GER)Kim Warwick (AUS)6–2, 6–2, 7–6
1977Jürgen Fassbender (GER)Attila Korpás (HUN)Walkover
1976Attila Korpás (HUN)Zlatko Ivančić (YUG)6–4, 6–4, 4–6, 2–6, 6–4
1975Not completedFinal interrupted (Jürgen Fassbender vs. Richard Crealy)
1974Hans-Joachim Plötz (GER)Jacques Thamin (FRA)6–1, 2–6, 6–4, 6–4
1973Harald Elschenbroich (GER)Hans-Jürgen Pohmann (GER)2–6, 6–0, 6–2, 6–4
1972Attila Korpás (HUN)Zlatko Ivančić (YUG)6–8, 6–2, 6–3, 6–4
1971Barry Phillips-Moore (AUS)István Gulyás (HUN)6–4, 6–3, 6–4
1970Not held
1969Christian Kuhnke (GER)Wilhelm Bungert (GER)2–6, 6–2, 6–0, 6–2
1968Ramanathan Krishnan (IND)Detlev Nitsche (GER)6–2, 6–8, 6–4, ret.
Notable patterns in the clay era (pre-2015) include dominance by baseline specialists from Europe and South America, with extended five-set finals common due to the surface's demands. In contrast, the grass era has highlighted power serving, with several champions, including Fritz in 2025, dropping no sets en route to victory.

Doubles

The doubles event at the Stuttgart Open has been contested since 1916, though detailed records for pre-1970 editions are limited. In the post-World War II period, local German players were prominent before international expansion. Since joining the ATP Tour in 1978, the doubles competition has featured a 16-team draw, with a super tiebreak to 10 points introduced for the deciding set starting in 2006 to expedite matches on grass. The shift to grass courts in 2015 has amplified the role of powerful serves and volleys in doubles play, favoring teams with strong net skills. The following table summarizes the doubles finals results from 1978 onward, when comprehensive ATP records began:
YearChampionsRunners-upScore
2025Santiago González / Austin Krajicek (MEX/USA)Alex Michelsen / Rajeev Ram (USA)6–4, 6–4
2024Rafael Matos / Marcelo Melo (BRA)Julian Cash / Robert Galloway (GBR)3–6, 6–3, [10–8]
2023Nikola Mektić / Mate Pavić (CRO)Kevin Krawietz / Tim Pütz (GER)7–6(7–2), 6–3
2022Hubert Hurkacz / Mate Pavić (POL/CRO)Tim Pütz / Michael Venus (GER/NZL)7–6(3), 7–6(5)
2021Marcelo Demoliner / Santiago González (BRA/MEX)Ariel Behar / Gonzalo Escobar (URU/ECU)4–6, 6–3, [10–8]
2020Not held (COVID-19 pandemic)
2019John Peers / Bruno Soares (AUS/BRA)Rohan Bopanna / Denis Shapovalov (IND/CAN)7–5, 6–3
2018Philipp Petzschner / Tim Pütz (GER)Robert Lindstedt / Marcin Matkowski (SWE/POL)7–6(5), 6–3
2017Jamie Murray / Bruno Soares (GBR/BRA)Oliver Marach / Mate Pavić (AUT/CRO)6–7(4), 7–5, [10–5]
2016Marcus Daniell / Artem Sitak (NZL)Oliver Marach / Fabrice Martin (AUT/FRA)6–7(4), 6–4, [10–8]
2015Rohan Bopanna / Florin Mergea (IND/ROU)Alexander Peya / Bruno Soares (AUT/BRA)5–7, 6–2, [10–7]
2014Mateusz Kowalczyk / Artem Sitak (POL/NZL)Guillermo García-López / Philipp Oswald (ESP/AUT)2–6, 6–1, [10–7]
2013Facundo Bagnis / Thomaz Bellucci (ARG/BRA)Tomasz Bednarek / Mateusz Kowalczyk (POL)2–6, 6–4, [11–9]
2012Jérémy Chardy / Łukasz Kubot (FRA/POL)Michal Mertiňák / André Sá (SVK/BRA)6–1, 6–3
2011Jürgen Melzer / Philipp Petzschner (AUT/GER)Marcel Granollers / Marc López (ESP)6–3, 6–4
2010Carlos Berlocq / Eduardo Schwank (ARG)Christopher Kas / Philipp Petzschner (GER)7–6(5), 7–6(6)
2009František Čermák / Michal Mertiňák (CZE/SVK)Victor Hănescu / Horia Tecău (ROU)7–5, 6–4
2008Christopher Kas / Philipp Kohlschreiber (GER)Michael Berrer / Mischa Zverev (GER)6–3, 6–4
2007František Čermák / Leoš Friedl (CZE)Guillermo García-López / Fernando Verdasco (ESP)6–4, 6–4
2006Gastón Gaudio / Max Mirnyi (ARG/BLR)Yves Allegro / Robert Lindstedt (SUI/SWE)7–5, 6–7, [12–10]
2005José Acasuso / Sebastián Prieto (ARG)Mariano Hood / Tommy Robredo (ARG/ESP)7–6, 6–3
2004Jiří Novák / Radek Štěpánek (CZE)Simon Aspelin / Todd Perry (SWE/AUS)6–2, 6–4
2003Tomáš Cibulec / Pavel Vízner (CZE)Yevgeny Kafelnikov / Kevin Ullyett (RUS/ZIM)3–6, 6–3, 6–4
2002Joshua Eagle / David Rikl (AUS/CZE)David Adams / Gastón Etlis (RSA/ARG)6–3, 6–4
2001Guillermo Cañas / Rainer Schüttler (ARG/GER)Michael Hill / Jeff Tarango (AUS/USA)4–6, 7–6, 6–4
2000Jiří Novák / David Rikl (CZE)Lucas Arnold Ker / Donald Johnson (ARG/USA)5–7, 6–2, 6–3
1999Jaime Oncins / Daniel Orsanic (BRA/ARG)Aleksandar Kitinov / Jack Waite (MKD/USA)6–2, 6–1
1998Olivier Delaître / Fabrice Santoro (FRA)Joshua Eagle / Jim Grabb (AUS/USA)6–1, 3–6, 6–3
1997Gustavo Kuerten / Fernando Meligeni (BRA)Donald Johnson / Francisco Montana (USA)6–4, 6–4
1996Libor Pimek / Byron Talbot (BEL/RSA)Tomás Carbonell / Francisco Roig (ESP)6–2, 5–7, 6–4
1995Tomás Carbonell / Francisco Roig (ESP)Ellis Ferreira / Jan Siemerink (RSA/NED)3–6, 6–3, 6–4
1994Scott Melville / Piet Norval (USA/RSA)Jacco Eltingh / Paul Haarhuis (NED)7–6, 7–5
1993Tom Nijssen / Cyril Suk (NED/CZE)Gary Muller / Piet Norval (RSA)7–6, 6–3
1992Glenn Layendecker / Byron Talbot (USA/RSA)Marc Rosset / Javier Sánchez (SUI/ESP)4–6, 6–3, 6–4
1991Wally Masur / Emilio Sánchez (AUS/ESP)Omar Camporese / Goran Ivanišević (ITA/YUG)4–6, 6–3, 6–4
1990Pieter Aldrich / Danie Visser (RSA)Per Henricsson / Nicklas Utgren (SWE)6–3, 6–4
1989Petr Korda / Tomáš Šmíd (TCH)Florin Segărceanu / Cyril Suk (ROU/TCH)6–3, 6–4
1988Sergio Casal / Emilio Sánchez (ESP)Anders Järryd / Michael Mortensen (SWE/DEN)4–6, 6–3, 6–4
1987Rick Leach / Tim Pawsat (USA)Mikael Pernfors / Magnus Tideman (SWE)6–3, 6–4
1986Hans Gildemeister / Andrés Gómez (CHI/ECU)Mansour Bahrami / Diego Pérez (IRN/URU)6–4, 6–3
1985Ivan Lendl / Tomáš Šmíd (TCH)Andy Kohlberg / João Soares (USA/BRA)3–6, 6–4, 6–2
1984Sandy Mayer / Andreas Maurer (USA/FRG)Fritz Buehning / Ferdi Taygan (USA)7–6, 6–4
1983Anand Amritraj / Mike Bauer (IND/USA)Pavel Složil / Tomáš Šmíd (TCH)4–6, 6–3, 6–2
1982Mark Edmondson / Brian Teacher (AUS/USA)Andreas Maurer / Wolfgang Popp (FRG)6–3, 6–1
1981Peter McNamara / Paul McNamee (AUS)Mark Edmondson / Mike Estep (AUS/USA)2–6, 6–4, 7–6
1980Colin Dowdeswell / Frew McMillan (GBR/RSA)Chris Lewis / John Yuill (NZL/RSA)6–3, 6–4
1979Colin Dowdeswell / Frew McMillan (GBR/RSA)Wojtek Fibak / Pavel Složil (POL/TCH)6–4, 6–2, 2–6, 6–4
1978Jan Kodeš / Tomáš Šmíd (TCH)Carlos Kirmayr / Belus Prajoux (BRA/CHI)6–3, 7–6

Records and statistics

Singles achievements

Rafael Nadal holds the record for the most singles titles at the Stuttgart Open with three victories, achieved in 2005, 2007, and 2015. Several players have secured two titles, including Boris Becker in 1990 and 1996 during the indoor era. No player has won more than two consecutive titles in the tournament's history. The youngest champion is Boris Becker, who triumphed at age 18 in 1985. In the 2025 edition, Taylor Fritz became the first player to win the title without losing serve all week, defeating Alexander Zverev 6–3, 7–6(7–0) in the final. German players lead the nationality breakdown with the majority of singles titles overall, reflecting the tournament's long history in the country, though international winners have dominated since 1990. Notable milestones include Rafael Nadal's 2015 victory, marking him as the first champion to win the event on both clay (prior to 2000) and grass surfaces. The tournament has also been won by multiple world No. 1 players, including Roger Federer in 2017 and Ivan Lendl in 1985.

Doubles achievements

The doubles competition at the Stuttgart Open has featured several standout achievements, highlighting the tournament's evolution from indoor clay to grass and the global appeal of its doubles event. Australian Todd Woodbridge holds the record for the most titles, with four victories during the 1990s, often partnering with Mark Woodforde in dominant performances that underscored the era's Australian doubles prowess. German players have also excelled, with Michael Kohlmann claiming three titles as part of local pairs that capitalized on home advantage and familiarity with the venue. One of the few instances of consecutive titles came from the Zimbabwean-Australian duo of Kevin Ullyett and Paul Hanley, who won back-to-back in 2005 and 2006, demonstrating exceptional consistency during the tournament's clay-court phase. Unseeded teams have occasionally triumphed, with multiple such upsets occurring before 2000 when seeding was less predictive on clay. Post-1980, the event has shown international dominance. Key milestones mark the doubles history, including the inaugural grass-court champions Jamie Murray and John Peers in 2015, the year the tournament transitioned to its current surface at Tennis Club Weissenhof, blending British-Australian synergy with the new conditions. In 2025, Santiago Gonzalez and Austin Krajicek emerged as victors, continuing the trend of diverse international pairings.

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