2023 BOSS Open
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The 2023 BOSS Open was a men's tennis tournament played on outdoor grass courts. It was the 45th edition of the Stuttgart Open, and part of the ATP Tour 250 series of the 2023 ATP Tour. It was held at the Tennis Club Weissenhof in Stuttgart, Germany, from 12 June until 18 June 2023.
Champions
Singles
- United States Frances Tiafoe def. Germany Jan-Lennard Struff, 4–6, 7–6(7–1), 7–6(10–8)
Doubles
- Croatia Nikola Mektić / Croatia Mate Pavić def. Germany Kevin Krawietz / Germany Tim Pütz, 7–6(7–2), 6–3
Point distribution
| Event | W | F | SF | QF | Round of 16 | Round of 32 | Q | Q2 | Q1 |
| Singles | 250 | 150 | 90 | 45 | 20 | 0 | 12 | 6 | 0 |
| Doubles | 0 | —N/a | —N/a | —N/a | —N/a |
Singles main draw entrants
Seeds
| Country | Player | Rank | Seed |
|---|---|---|---|
| GRE | Stefanos Tsitsipas | 5 | 1 |
| USA | Taylor Fritz | 8 | 2 |
| USA | Frances Tiafoe | 12 | 3 |
| POL | Hubert Hurkacz | 14 | 4 |
| USA | Tommy Paul | 17 | 5 |
| ITA | Lorenzo Musetti | 18 | 6 |
| ITA | Matteo Berrettini | 20 | 7 |
| AUS | Nick Kyrgios | 26 | 8 |
- Rankings are as of 29 May 2023.
Other entrants
The following players received wildcards into the main draw:
The following players received entry from the qualifying draw:
Withdrawals
- Spain Alejandro Davidovich Fokina → replaced by France Corentin Moutet
- United Kingdom Jack Draper → replaced by Australia Christopher O'Connell
- Bulgaria Grigor Dimitrov → replaced by Germany Daniel Altmaier
- Chile Nicolás Jarry → replaced by China Zhang Zhizhen
Doubles main draw entrants
Seeds
| Country | Player | Country | Player | Rank | Seed |
|---|---|---|---|---|---|
| IND | Rohan Bopanna | AUS | Matthew Ebden | 27 | 1 |
| CRO | Nikola Mektić | CRO | Mate Pavić | 28 | 2 |
| MEX | Santiago González | FRA | Édouard Roger-Vasselin | 36 | 3 |
| GER | Kevin Krawietz | GER | Tim Pütz | 50 | 4 |
- 1 Rankings are as of 29 May 2023.
Other entrants
The following pairs received wildcards into the doubles main draw:
Withdrawals
- Colombia Nicolás Barrientos / Chile Nicolás Jarry → replaced by Monaco Romain Arneodo / France Grégoire Barrère
- United Kingdom Julian Cash / United Kingdom Henry Patten → replaced by Aslan Karatsev / Czech Republic Jiří Lehečka
- Croatia Ivan Dodig / United States Austin Krajicek → replaced by United States William Blumberg / United States Frances Tiafoe
- United States Rajeev Ram / United Kingdom Joe Salisbury → replaced by France Albano Olivetti / Spain David Vega Hernández