2004 U.S. Men's Clay Court Championships – Singles

Singles
2004 U.S. Men's Clay Court Championships
2003 Champion	Andre Agassi
Champion	Tommy Haas
Runner-up	Andy Roddick
Score	6–3, 6–4
Draw	32
Seeds	8

The 2004 U.S. Men's Clay Court Championships – Singles was an event of the 2004 U.S. Men's Clay Court Championships professional tennis tournament played on outdoor clay courts in Houston, Texas in the United States and was part of the International Series of the 2004 ATP Tour. The tournament was held from April 12 through April 18, 2006. The singles draw comprised 32 players and eight of them were seeded. Andre Agassi was the defending champion but did not compete that year. Unseeded Tommy Haas won the singles title after a 6–3, 6–4 win in the final against first-seeded Andy Roddick.

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

Key

	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