Singles
2004 U.S. Men's Clay Court Championships
2003 Champion	Andre Agassi
Final
Champion	Tommy Haas
Runner-up	Andy Roddick
Score	6–3, 6–4
Events
Singles Doubles
← 2003 · U.S. Men's Clay Court Championships · 2005 →

Andre Agassi was the defending champion but did not compete that year.

Tommy Haas won in the final 6–3, 6–4 against Andy Roddick.

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 Roddick	6	7
		K Carlsen	1	5				1	A Roddick	6	6
		R Kendrick	6	3	77				R Kendrick	2	3
	LL	S de Chaunac	2	6	62										1	A Roddick	7	77
		A Popp	1	3											8	J Melzer	5	65
		T Behrend	6	6					T Behrend	2	4
	Q	D Veronelli	3	1				8	J Melzer	6	6
	8	J Melzer	6	6																		1	A Roddick	6	6
	3	T Dent	6	5	65																	7	L Horna	3	4
		F Squillari	0	7	77				F Squillari	63	66
		M Vassallo Argüello	1	2				WC	T Martin	77	78
	WC	T Martin	6	6											WC	T Martin	5	3
	Q	J-C Faurel	0	2											7	L Horna	7	6
	Q	S Robert	6	6				Q	S Robert	6	1	3
	WC	B Vahaly	3	1				7	L Horna	0	6	6
	7	L Horna	6	6																									1	Andy Roddick	3	4
	5	A Pavel	6	6																										Tommy Haas	6	6
		N Lapentti	4	3				5	A Pavel	4	6	6
		L Burgsmüller	2	2					J Acasuso	6	3	2
		J Acasuso	6	6											5	A Pavel	6	6
	Q	A Peya	3	7	4										3	J Blake	4	4
		D Sanguinetti	6	5	6				D Sanguinetti	5	3
	WC	W Odesnik	4	2				4	J Blake	7	6
	4	J Blake	6	6																		5	A Pavel	4	77	4
	6	R Ginepri	65	4																			T Haas	6	64	6
		T Haas	77	6					T Haas	6	6
		T Enqvist	4	4					P Goldstein	4	2
		P Goldstein	6	6												T Haas	6	6
		D Tursunov	63	6	7											D Tursunov	2	0
		I Karlović	77	4	5				D Tursunov	6	3	6
		A Bogomolov Jr.	6	6					A Bogomolov Jr.	2	6	2
	2	M Fish	3	1

• 2004 U.S. Men's Clay Court Championships Draw