2006 U.S. Men's Clay Court Championships – Singles

Singles
2006 U.S. Men's Clay Court Championships
2005 Champion	Andy Roddick
Champion	Mardy Fish
Runner-up	Jürgen Melzer
Score	3–6, 6–4, 6–3
Draw	32
Seeds	8

The 2006 U.S. Men's Clay Court Championships – Singles was an event of the 2006 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 2006 ATP Tour. The tournament was held from April 10 through April 17, 2006. The singles draw comprised 32 players and eight of them were seeded. Unseeded Mardy Fish won the singles title after a 3–6, 6–4, 6–3 win in the final against unseeded Jürgen Melzer.

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	6
		P Capdeville	3	2				1	A Roddick	6	6
		O Marach	6	6					O Marach	3	4
		J A Marín	4	1											1	A Roddick	77	4	4
		A Waske	6	2	62										5	T Haas	61	6	6
		J Vaněk	4	6	77				A Waske	1	67
		Ó Hernández	1	4				5	T Haas	6	79
	5	T Haas	6	6																		5	T Haas	1r
	WC/4	M Baghdatis	6	77																		WC	M Fish	4
	WC	J Witten	4	62				WC/4	M Baghdatis	2	1r
		V Spadea	6	6					V Spadea	6	3
		C Berlocq	1	3												V Spadea	6	61	2
		R Schüttler	6	6											WC	M Fish	4	77	6
	Q	G Müller	0	3					R Schüttler
	WC	M Fish	6	1	77			WC	M Fish	w/o
	8	J Mónaco	2	6	65																								WC	Mardy Fish	3	6	6
	7	P Goldstein	6	6																										J Melzer	6	3	4
		J Tipsarević	3	3				7	P Goldstein	6	6
	Q	I Kunitsyn	5	6	3			Q	S Jenkins	4	1
	Q	S Jenkins	7	2	6										7	P Goldstein	6	6
		R Sabău	5	7	5											Montañés	3	4
		T Behrend	7	5	7				T Behrend	2	3
		Montañés	6	6					Montañés	6	6
	3	R Ginepri	4	4																		7	P Goldstein	3	4
	6	L Horna	3	4																			J Melzer	6	6
		M Daniel	6	6					M Daniel	62	4
		J Melzer	79	6					J Melzer	77	6
		I Minář	67	0												J Melzer	7	6
		B Reynolds	2	1												F Vicente	5	4
		F Vicente	6	6					F Vicente	6	7
	Q	A Dupuis	77	3	6			Q	A Dupuis	2	5
	2	J Blake	62	6	1

• 2006 U.S. Men's Clay Court Championships draw
• 2006 U.S. Men's Clay Court Championships Qualifying draw