Table: From 1968 onward, List of Most Stuttgart Open titles,
BOSS Open, ATP 250, Germany, Men, Tennis, Ranked.
| ACTIVE | TITLES | MEN |
|---|---|---|
| Rafael Nadal | 3 | |
| A | Matteo Berrettini | 2 |
| Gustavo Kuerten | 2 | |
| Thomas Muster | 2 | |
| Attila Korpás | 2 | |
| Martín Jaite | 2 | |
| A | Ben Shelton (Current) | 1 |
| A | Taylor Fritz | 1 |
| A | Frances Tiafoe | 1 |
| A | Jack Draper | 1 |
| A | Marin Čilić | 1 |
| A | Lucas Pouille | 1 |
| Fabio Fognini | 1 | |
| A | Roberto Bautista Agut | 1 |
| Roger Federer | 1 | |
| Dominic Thiem | 1 | |
| Mikhail Youzhny | 1 | |
| Guillermo Coria | 1 | |
| Guillermo Cañas | 1 | |
| David Ferrer | 1 | |
| Juan Martín del Potro | 1 | |
| Jérémy Chardy | 1 | |
| Albert Montañés | 1 | |
| Juan Carlos Ferrero | 1 | |
| Janko Tipsarević | 1 | |
| Álex Corretja | 1 | |
| Magnus Norman | 1 | |
| Franco Squillari | 1 | |
| Jürgen Fassbender | 1 | |
| Ulrich Pinner | 1 | |
| Tomáš Šmíd | 1 | |
| Vitas Gerulaitis | 1 | |
| Björn Borg | 1 | |
| Ramesh Krishnan | 1 | |
| José Higueras | 1 | |
| Henri Leconte | 1 | |
| Ivan Lendl | 1 | |
| Miloslav Mečíř | 1 | |
| Andre Agassi | 1 | |
| Goran Ivanišević | 1 | |
| Michael Stich | 1 | |
| Andrei Medvedev | 1 | |
| Magnus Gustafsson | 1 | |
| Alberto Berasategui | 1 | |
| Ramanathan Krishnan | 1 | |
| Christian Kuhnke | 1 | |
| Barry Phillips-Moore | 1 | |
| Harald Elschenbroich | 1 | |
| Hans-Joachim Plötz | 1 |
2026 Final Ben Shelton defeated defending champion Taylor Fritz 6–4, 2–6, 6–4 to win his sixth ATP Tour title and first on grass.
Altitude Stuttgart sits at approximately 245 meters (804 feet) above sea level in the Swabian highlands of southwestern Germany. This moderate elevation gives the ball a fractionally extra pace compared to sea-level grass events, complementing the already fast nature of the surface. Big servers benefit doubly in Stuttgart — the altitude adds a touch more zip to already skidding grass-court deliveries.
Humidity June in Stuttgart brings warm early-summer conditions, with average temperatures between 13°C and 23°C (55°F–73°F). Humidity is moderate at around 60–65%, lower than northern European grass events like ‘s-Hertogenbosch or Wimbledon. The drier air helps keep the grass courts firmer and faster, making Stuttgart one of the quickest grass surfaces on the calendar and particularly favorable for aggressive serve-and-volley play.
Outdoor Tournament The Boss Open is played outdoors at the Tennisclub Weissenhof, one of the most historic clubs in Germany, perched on a hillside overlooking the city. It serves as one of the opening events of the grass-court season and is known for attracting big-serving, attacking players who use Stuttgart as their first real tune-up before Queen’s Club, Halle, and Wimbledon.
Surface Stuttgart’s grass plays exceptionally fast — among the quickest on the ATP calendar. The combination of moderate altitude, lower humidity, and the firm Weissenhof courts produces a surface where serves are nearly unreturnable, volleys are at a premium, and baseline rallies are short and explosive. It is one of the most serve-dominated tournaments of the year, consistently producing first-round upsets when clay-court specialists struggle to adapt quickly enough to the drastically different conditions.