2025 BOSS Open – Singles

Taylor Fritz defeated Alexander Zverev in the final, 6–3, 7–6^(7–0) to win the singles tennis title at the 2025 Stuttgart Open.^[1] He won the title without losing a set or having his serve broken during the tournament. It was Fritz's fourth grass court title, and ninth ATP Tour singles title overall.

Singles
2025 BOSS Open
Champion	Taylor Fritz
Runner-up	Alexander Zverev
Score	6–3, 7–6(7–0)
Draw	28 (4 Q / 3 WC )
Seeds	8

Main article: 2025 BOSS Open

Jack Draper was the reigning champion,^[2] but did not participate this year.

At 17 years and eight months old, Justin Engel was the second-youngest player since 1990 to win a tour-level match (excluding Davis Cup) on three surfaces, after Rafael Nadal.^[3] He became the youngest quarterfinalist in the tournament's history and the youngest at any grass-court tournament since Boris Becker at the 1985 Wimbledon Championships.^[4]

Seeds

The top four seeds received a bye into the second round.

1. Alexander Zverev (final)
2. Taylor Fritz (champion)
3. Ben Shelton (semifinals)
4. Félix Auger-Aliassime (semifinals)
5. Denis Shapovalov (first round)
6. Brandon Nakashima (quarterfinals)
7. Alex Michelsen (second round)
8. Jiří Lehečka (quarterfinals)

Draw

Key

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• Alt = Alternate
• ITF = ITF entry
• PR = Protected ranking
• SR = Special ranking
• SE = Special exempt
• JE = Junior exempt
• JR = Junior Accelerator Programme entrant
• CO = College Accelerator Programme entrant
• NG = Next Gen Accelerator Program entrant
• w/o = Walkover
• r = Retired
• d = Defaulted

Finals

	Semifinals							Final
	1	Alexander Zverev	710	77
	3	Ben Shelton	68	61
								1	Alexander Zverev	3	60
								2	Taylor Fritz	6	77
	4	Félix Auger-Aliassime	4	65
	2	Taylor Fritz	6	77

Top half

	First round							Second round							Quarterfinals							Semifinals
								1	A Zverev	6	79
	WC	F Fognini	4	77	3				C Moutet	2	67
		C Moutet	6	63	6										1	A Zverev	7	6
		L Tien	63	77	0										6	B Nakashima	5	4
		Y Nishioka	77	63	0r				L Tien	65	3
		J Fearnley	6	64	1			6	B Nakashima	77	6
	6	B Nakashima	4	77	6																	1	A Zverev	710	77
																						3	B Shelton	68	61
								3	B Shelton	77	7
		D Džumhur	4	0r				Q	P-H Herbert	64	5
	Q	P-H Herbert	6	3											3	B Shelton	6	6
		M Arnaldi	4	4											8	J Lehečka	4	4
	WC	J-L Struff	6	6				WC	J-L Struff	4	5
		B Bonzi	4	4				8	J Lehečka	6	7
	8	J Lehečka	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	A Michelsen	6	4	6
		G Monfils	4	6	3			7	A Michelsen	4	4
	WC	J Engel	4	6	77			WC	J Engel	6	6
	Q	J Duckworth	6	4	65										WC	J Engel	63	3
		R Safiullin	610	6	5										4	F Auger-Aliassime	77	6
		G Mpetshi Perricard	712	3	7				G Mpetshi Perricard	4	4
								4	F Auger-Aliassime	6	6
																						4	F Auger-Aliassime	4	65
	5	D Shapovalov	4	6	0																	2	T Fritz	6	77
		A Rinderknech	6	2	6				A Rinderknech	64	3
	Q	Y Hanfmann	5	4				Q	M Fucsovics	77	6
	Q	M Fucsovics	7	6											Q	M Fucsovics	3	4
		Q Halys	66	7	6										2	T Fritz	6	6
		L Sonego	78	5	4				Q Halys	3	66
								2	T Fritz	6	78

Qualifying

Seeds

1. James Duckworth (qualified)
2. Eliot Spizzirri (first round)
3. Tristan Boyer (qualifying competition)
4. Márton Fucsovics (qualified)
5. Nikoloz Basilashvili (qualifying competition)
6. Yannick Hanfmann (qualified)
7. Pierre-Hugues Herbert (qualified)
8. Marc-Andrea Hüsler (first round)

Qualifiers

1. James Duckworth
2. Pierre-Hugues Herbert
3. Yannick Hanfmann
4. Márton Fucsovics

Qualifying draw

First qualifier

	First round							Qualifying competition
	1	James Duckworth	6	77
		Benjamin Hassan	3	64
								1	James Duckworth	64	77	6
								5	Nikoloz Basilashvili	77	65	3
		Hugo Grenier	6	611	2
	5	Nikoloz Basilashvili	2	713	6

Second qualifier

	First round							Qualifying competition
	2	Eliot Spizzirri	4	5
		Li Tu	6	7
									Li Tu	3	77	1
								7	Pierre-Hugues Herbert	6	62	6
	Alt	Maximilian Marterer	1	1
	7	Pierre-Hugues Herbert	6	6

Third qualifier

	First round							Qualifying competition
	3	Tristan Boyer	65	79	77
		Duje Ajduković	77	67	65
								3	Tristan Boyer	612	4
								6	Yannick Hanfmann	714	6
	WC	Max Wiskandt	4	2
	6	Yannick Hanfmann	6	6

Fourth qualifier

	First round							Qualifying competition
	4	Márton Fucsovics	6	62	7
	WC	Patrick Zahraj	4	77	5
								4	Márton Fucsovics	65	6	6
									Beibit Zhukayev	77	3	2
		Beibit Zhukayev	6	5	6
	8	Marc-Andrea Hüsler	3	7	4