Men's singles
2003 US Open
Final
Champion	Andy Roddick
Runner-up	Juan Carlos Ferrero
Score	6–3, 7–6(7–2), 6–3
Details
Draw	128
Seeds	32
Events
Singles men women boys girls Doubles men women mixed boys girls WC Singles men women quad WC Doubles men women quad Legends men women mixed
← 2002 · US Open · 2004 →

Andy Roddick defeated Juan Carlos Ferrero in the final, 6–3, 7–6^(7–2), 6–3 to win the men's singles tennis title at the 2003 US Open. It was his first and only major title. Roddick remains the most recent American to win a major men's singles title. Roddick saved a match point en route to the title, in the semifinals against David Nalbandian. He also completed the "Summer Slam," having won Masters titles in Canada and Cincinnati in the lead-up to the US Open.

Pete Sampras was the reigning champion, but he retired from professional tennis in August 2003.

This tournament marked the first US Open main draw appearance for future four-time champion Rafael Nadal, as well as the first major main draw appearance for future world No. 4 and Wimbledon finalist Tomáš Berdych. It also marked the final major appearances for former major champions Michael Chang and Yevgeny Kafelnikov.

	Quarterfinals									Semifinals									Final
	1	Andre Agassi	6	6	7
	5	Guillermo Coria	4	3	5
										1	Andre Agassi	4	3	6	4
										3	Juan Carlos Ferrero	6	6	3	6
	3	Juan Carlos Ferrero	4	6	77	6
	6	Lleyton Hewitt	6	3	65	1
																			3	Juan Carlos Ferrero	3	62	3
																			4	Andy Roddick	6	77	6
	12	Sjeng Schalken	4	2	3
	4	Andy Roddick	6	6	6
										4	Andy Roddick	64	3	79	6	6
										13	David Nalbandian	77	6	67	1	3
	22	Younes El Aynaoui	62	2	6	5
	13	David Nalbandian	77	6	3	7

	First round									Second round									Third round									Fourth round
	1	A Agassi	6	6	6
		À Corretja	1	2	2					1	A Agassi	77	6	6
		A Vinciguerra	77	62	7	1	6				A Vinciguerra	61	1	4
	WC	R Kendrick	64	77	5	6	1												1	A Agassi	6	77	6
		K Carlsen	6	3	6	6													27	Y Kafelnikov	3	64	4
	WC	J Morrison	2	6	3	4					K Carlsen	6	2	3	3
		K Vliegen	6	61	2	2				27	Y Kafelnikov	4	6	6	6
	27	Y Kafelnikov	3	77	6	6																						1	A Agassi	65	6	7	0
	18	M Mirnyi	63	6	2	66																							T Dent	77	4	5	0r
		N Davydenko	77	2	6	78					N Davydenko	3	4	67
		T Dent	77	6	3	6					T Dent	6	6	79
	Q	R Söderling	61	3	6	4														T Dent	711	63	3	77	6
	Q	G Galimberti	7	2	2	64													15	F González	69	77	6	64	4
		S Koubek	5	6	6	77					S Koubek	61	1	2
	WC	M Chang	3	5	7	4				15	F González	77	6	6
	15	F González	6	7	5	6

	First round									Second round									Third round									Fourth round
	9	S Grosjean	4	77	6	67	4
	Q	R Delgado	6	63	4	79	6			Q	R Delgado	6	4	4	6	3
		J Björkman	6	6	6						J Björkman	4	6	6	3	6
		F Volandri	1	4	0															J Björkman	6	4	63	6	6
		K Kučera	6	7	6															K Kučera	4	6	77	4	4
		A Popp	2	5	3						K Kučera	6	79	6
	Q	J Johansson	3	2	4					24	M Fish	4	67	4
	24	M Fish	6	6	6																								J Björkman	2	3	6	2
	30	A Clément	66	78	6	6																						5	G Coria	6	6	4	6
		B Vahaly	78	66	3	4				30	A Clément	6	6	2	63	1
		G Carraz	6	4	6	5	6				G Carraz	3	1	6	77	6
		G Rusedski	4	6	2	7	4													G Carraz	5	1	5
	PR	B Ulihrach	4	6	6	6													5	G Coria	7	6	7
	Q	M Abel	6	4	3	1				PR	B Ulihrach	2	1	4
		M Puerta	4	3	1					5	G Coria	6	6	6
	5	G Coria	6	6	6

	First round									Second round									Third round									Fourth round
	3	JC Ferrero	6	4	6	6
	Q	J Vacek	2	6	3	2				3	JC Ferrero	1	77	6	6
		J Melzer	6	6	5	6					J Melzer	6	62	2	4
	WC	B Baker	3	3	7	3													3	JC Ferrero	7	7	6
	LL	T Berdych	5	6	6	6													32	JI Chela	5	5	1
		T Behrend	7	3	2	3				LL	T Berdych	6	1	4	3
	Q	R Karanušić	4	62	3					32	JI Chela	2	6	6	6
	32	JI Chela	6	77	6																							3	JC Ferrero	6	6	3	5	6
	23	W Ferreira	6	6	6																								T Martin	2	4	6	7	3
		I Miranda	4	3	1					23	W Ferreira	2	4	77	2
		D Ferrer	2	3	3						R Ginepri	6	6	60	6
		R Ginepri	6	6	6															R Ginepri	77	64	4	4
	WC	R Yim	1	67	2															T Martin	62	77	6	6
		T Martin	6	79	6						T Martin	6	6	65	711
	WC	A Bogomolov Jr.	64	6	6	69	0r			16	M Verkerk	3	4	77	69
	16	M Verkerk	77	4	3	711	1

	First round									Second round									Third round									Fourth round
	11	P Srichaphan	2	6	6	77
		C Saulnier	6	2	3	64				11	P Srichaphan	6	6	6
		J Gimelstob	3	4	2						D Hrbatý	4	4	3
		D Hrbatý	6	6	6														11	P Srichaphan	6	6	6
		R Ramírez Hidalgo	6	0	6	1	1												LL	F Verdasco	3	4	3
		D Sanguinetti	4	6	3	6	6				D Sanguinetti	66	65	6	3
	LL	F Verdasco	6	6	6					LL	F Verdasco	78	77	4	6
	17	T Robredo	3	4	2																							11	P Srichaphan	6	2	4	2
	28	F López	4	4	4																							6	L Hewitt	4	6	6	6
		R Štěpánek	6	6	6						R Štěpánek	6	6	66	6
	Q	J Benneteau	6	5	2	2					F Santoro	2	4	78	3
		F Santoro	0	7	6	6														R Štěpánek	1	0r
		H-t Lee	6	6	77														6	L Hewitt	6	3
		V Voltchkov	3	4	63						H-t Lee	7	2	2	4
		V Hănescu	3	2	2					6	L Hewitt	5	6	6	6
	6	L Hewitt	6	6	6

	First round									Second round									Third round									Fourth round
	8	R Schüttler	4	6	6	6
		W Arthurs	6	3	2	4				8	R Schüttler	6	7	2	6
		N Kiefer	6	5							N Kiefer	1	5	6	4
		F Squillari	3	0r															8	R Schüttler	6	6	6
		O Mutis	0	3	1															A Martín	1	4	2
		A Martín	6	6	6						A Martín	6	6	3	6
		R Sluiter	65	63	6	3				25	A Costa	3	3	6	2
	25	A Costa	77	77	2	6																						8	R Schüttler	1	6	3	4
	21	F Mantilla	4	4	4																							12	S Schalken	6	4	6	6
	Q	I Karlović	6	6	6					Q	I Karlović	3	77	77	78
	Q	J Salzenstein	1	64	3						H Arazi	6	65	64	66
		H Arazi	6	77	6														Q	I Karlović	68	65	63
		L Horna	4	6	6	5	1												12	S Schalken	710	77	77
		L Burgsmüller	6	4	3	7	6				L Burgsmüller	6	6	2	2	0
		J Boutter	2	3	2					12	S Schalken	4	2	6	6	6
	12	S Schalken	6	6	6

	First round									Second round									Third round									Fourth round
	14	G Kuerten	7	2	2	6	61
	Q	D Tursunov	5	6	6	4	77			Q	D Tursunov	6	3	6	5	6
		C Rochus	0	2	2						J van Lottum	4	6	3	7	2
		J van Lottum	6	6	6														Q	D Tursunov	5	4	68
		X Malisse	6	6	6															X Malisse	7	6	710
		O Rochus	3	4	2						X Malisse	6	63	6	3	6
		W Eschauer	64	62	6	4				19	A Calleri	2	77	3	6	3
	19	A Calleri	77	77	1	6																							X Malisse	3	4	65
	31	V Spadea	3	1	7	68																						4	A Roddick	6	6	77
		F Saretta	6	6	5	710					F Saretta	6	6	6
		K Beck	6	3	5	6	4				N Lapentti	2	4	0
		N Lapentti	4	6	7	3	6													F Saretta	1	3	3
		I Ljubičić	6	6	7														4	A Roddick	6	6	6
		P-H Mathieu	4	2	5						I Ljubičić	3	77	3	68
		T Henman	3	62	3					4	A Roddick	6	64	6	710
	4	A Roddick	6	77	6

	First round									Second round									Third round									Fourth round
	7	C Moyà	4	6	7	78
		S Draper	6	4	5	66				7	C Moyà	6	78	6
	Q	W Moodie	77	6	6					Q	W Moodie	2	66	3
		Á Montañés	63	2	2														7	C Moyà	7	6	3	6
	Q	T Enqvist	6	6	6															N Massú	5	4	6	3
		A Portas	2	3	1					Q	T Enqvist	3	2	5
		N Massú	6	6	6						N Massú	6	6	7
	29	G Gaudio	3	3	2																							7	C Moyà	64	67	6	4
	22	Y El Aynaoui	7	77	6																							22	Y El Aynaoui	77	79	4	6
	WC	A Kim	5	65	3					22	Y El Aynaoui	78	6	78
		R Nadal	6	6	6						R Nadal	66	3	66
		F Vicente	4	3	3														22	Y El Aynaoui	77	5	3	6	77
		D Sánchez	63	2	2														10	J Novák	61	7	6	3	65
		J-M Gambill	77	6	6						J-M Gambill	4	4	4
		M Ančić	6	3	7	2	2			10	J Novák	6	6	6
	10	J Novák	3	6	5	6	6

	First round									Second round									Third round									Fourth round
	13	D Nalbandian	6	77	6
	Q	P Kohlschreiber	4	64	3					13	D Nalbandian	5	6	6	4	77
		J Nieminen	6	6	7						J Nieminen	7	3	1	6	63
	Q	N Mahut	2	4	5														13	D Nalbandian	7	610	6	6
		M Youzhny	7	4	6	3	5												20	M Philippoussis	5	712	3	2
		A Dupuis	5	6	3	6	7				A Dupuis	2	3	4
	Q	J Tipsarević	2	64	4					20	M Philippoussis	6	6	6
	20	M Philippoussis	6	77	6																							13	D Nalbandian	3	77	6	6
	26	M Zabaleta	64	3	2																							2	R Federer	6	61	4	3
		J Blake	77	6	6						J Blake	6	6	4	78
	WC	A Delic	6	3	77	2	5				S Sargsian	3	4	6	66
		S Sargsian	4	6	63	6	7													J Blake	3	64	3
		J-R Lisnard	6	6	64	0	77												2	R Federer	6	77	6
		M Norman	2	2	77	6	64				J-R Lisnard	1	2	0
		J Acasuso	7	3	3	0r				2	R Federer	6	6	6
	2	R Federer	5	6	6	2

• Association of Tennis Professionals (ATP) – 2003 US Open Men's Singles draw
• 2003 US Open – Men's draws and results at the International Tennis Federation