Singles
2003 U.S. Men's Clay Court Championships
2002 Champion	Andy Roddick
Final
Champion	Andre Agassi
Runner-up	Andy Roddick
Score	3–6, 6–3, 6–4
Events
Singles Doubles
← 2002 · U.S. Men's Clay Court Championships · 2004 →

Andy Roddick was the defending champion but lost in the final 3–6, 6–3, 6–4 against Andre Agassi.

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.

	First round							Second round							Quarterfinals							Semifinals							Final
	1	A Agassi	6	6
		Ž Krajan	2	0				1	A Agassi	6	6
		B Vahaly	3	77	3				I Labadze	2	0
		I Labadze	6	62	6										1	A Agassi	6	6
		A Sá	62	0											Q	R Mello	0	1
	Q	R Mello	77	6				Q	R Mello	78	6
		T Martin	6	6					T Martin	66	1
	8	H-T Lee	3	4																		1	A Agassi	6	6
	4	T Dent	6	64	3																		J Melzer	4	1
		J Melzer	4	77	6				J Melzer	5	6	6
	WC	T Blake	65	1					K Carlsen	7	3	4
		K Carlsen	77	6												J Melzer	7	2	7
	Q	S Roitman	3	3												M Fish	5	6	5
		M Fish	6	6					M Fish	6	6
		L Horna	6	6					L Horna	2	4
	6	J-M Gambill	2	4																									1	Andre Agassi	3	6	6
	LL	C Mamiit	3	1																									2	Andy Roddick	6	3	4
		F Saretta	6	6					F Saretta	2	0
		O Mutis	61	6	6				O Mutis	6	6
	WC	H Armando	77	4	1											O Mutis	6	63	6
		A Sávolt	6	6											3	J Blake	4	77	1
		N Kiefer	3	2					A Sávolt	2	62
		A Waske	4	4				3	J Blake	6	77
	3	J Blake	6	6																			O Mutis	6	1	2
	5	V Spadea	6	6																		2	A Roddick	4	6	6
	Q	J Brasington	3	3				5	V Spadea	6	66	3
		J Gimelstob	2	4					F Meligeni	4	78	6
		F Meligeni	6	6												F Meligeni	3	6	4
		T Enqvist	1	67											2	A Roddick	6	4	6
	Q	P Goldstein	6	79				Q	P Goldstein	5	4
	WC	J Morrison	3	1				2	A Roddick	7	6
	2	A Roddick	6	6

• 2003 U.S. Men's Clay Court Championships Draw
• 2003 U.S. Men's Clay Court Championships Qualifying Draw