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The 2025 BOSS Open was a men’s tennis tournament played on outdoor grass courts. It was the 47th edition of the Stuttgart Open and an ATP 250 tournament of the 2025 ATP Tour. It was held at the Tennis Club Weissenhof in Stuttgart, Germany, from 9 June until 15 June 2025.^[1]

• Taylor Fritz def. Alexander Zverev, 6–3, 7–6^(7–0)

• Santiago González / Austin Krajicek def. Alex Michelsen / Rajeev Ram, 6–4, 6–4

Event	W	F	SF	QF	R16	R32	Q	Q2	Q1
Singles	250	165	100	50	25	0	13	7	0
Doubles		150	90	45	0	—N/a	—N/a	—N/a	—N/a

Country	Player	Rank	Seed
GER	Alexander Zverev	3	1
USA	Taylor Fritz	4	2
USA	Ben Shelton	13	3
CAN	Félix Auger-Aliassime	27	4
CAN	Denis Shapovalov	31	5
USA	Brandon Nakashima	32	6
USA	Alex Michelsen	33	7
CZE	Jiří Lehečka	34	8

• Rankings are as of 26 May 2025.^[2]

The following players received wildcards into the main draw:

• Justin Engel
• Fabio Fognini
• Jan-Lennard Struff

The following players received entry from the qualifying draw:

• James Duckworth
• Márton Fucsovics
• Yannick Hanfmann
• Pierre-Hugues Herbert

• Matteo Berrettini → replaced by Roman Safiullin
• Nick Kyrgios → replaced by Corentin Moutet
• Lorenzo Musetti → replaced by Yoshihito Nishioka
• Tommy Paul → replaced by Jacob Fearnley
• Frances Tiafoe → replaced by Benjamin Bonzi

Country	Player	Country	Player	Rank	Seed
GER	Kevin Krawietz	GER	Tim Pütz	11	1
FRA	Sadio Doumbia	FRA	Fabien Reboul	48	2
IND	Rohan Bopanna	BEL	Sander Gillé	76	3
BRA	Rafael Matos	BRA	Marcelo Melo	79	4

• Rankings are as of 26 May 2025.

The following pairs received wildcards into the doubles main draw:

• Justin Engel / Jan-Lennard Struff
• Yannick Hanfmann / Andreas Mies

• Marcelo Arévalo / Mate Pavić → replaced by Jakob Schnaitter / Mark Wallner
• Simone Bolelli / Andrea Vavassori → replaced by Sriram Balaji / Miguel Ángel Reyes-Varela
• Christian Harrison / Evan King → replaced by Santiago González / Austin Krajicek
• Lorenzo Musetti / Lorenzo Sonego → replaced by Matteo Arnaldi / Lorenzo Sonego

• Official website