2013 U.S. Men's Clay Court Championships – Singles

Juan Mónaco was the defending champion, but lost to John Isner in the semifinals.
Isner went on to win the title, defeating Nicolás Almagro in the final, 6–3, 7–5.

Singles
2013 U.S. Men's Clay Court Championships
Champion	John Isner
Runner-up	Nicolás Almagro
Final score	6–3, 7–5

Seeds

The top four seeds received a bye into the second round.

1. Nicolás Almagro (Final)
2. Tommy Haas (Second Round)
3. Juan Mónaco (Semifinals)
4. Sam Querrey (withdrew because of a right pectoral muscle strain)
5. John Isner (Champion)
6. Fernando Verdasco (Second Round)
7. Paolo Lorenzi (Quarterfinals)
8. Michael Russell (First Round)

Draw

Key

• Q = Qualifier
• WC = Wild Card
• LL = Lucky Loser
• Alt = Alternate
• SE = Special Exempt
• PR = Protected Ranking
• ITF = ITF entry
• JE = Junior Exempt
• w/o = Walkover
• r = Retired
• d = Defaulted

Finals

	Semifinals							Final
	1	Nicolás Almagro	6	6
	WC	Rhyne Williams	2	1
								1	Nicolás Almagro	3	5
								5	John Isner	6	7
	3	Juan Mónaco	6	4	4
	5	John Isner	1	6	6

Top half

	First Round							Second Round							Quarterfinals							Semifinals
								1	N Almagro	2	6	6
		G Monfils	7^7	7					G Monfils	6	0	3
		J Blake	6^5	5											1	N Almagro	6	6
		F Cipolla	4	6	7										7	P Lorenzi	4	4
	Q	F Argüello	6	4	5				F Cipolla	6^4	1
	Q	G Melzer	2	2				7	P Lorenzi	7^7	6
	7	P Lorenzi	6	6																		1	N Almagro	6	6
																						WC	R Williams	2	1
								LL	I Karlović	4	7^7	6^3
	WC	R Williams	7	7				WC	R Williams	6	6^5	7^7
		G Pella	5	5											WC	R Williams	7^7	1	6
	PR	S Devvarman	6^5	0												R Ramírez Hidalgo	6^1	6	4
		R Ramírez Hidalgo	7^7	6					R Ramírez Hidalgo	6	6
	WC	S Johnson	6^5	2				6	F Verdasco	3	2
	6	F Verdasco	7^7	6

Bottom half

	First Round							Second Round							Quarterfinals							Semifinals
	8	M Russell	2	2
	Q	R Ginepri	6	6				Q	R Ginepri	6	4	6
		M Alund	4	6	6				M Alund	2	6	4
		L Hewitt	6	3	1										Q	R Ginepri	1	0
		J Ouanna	1	2											3	J Mónaco	6	6
		T Smyczek	6	6					T Smyczek	6^5	1
								3	J Mónaco	7^7	6
																						3	J Mónaco	6	4	4
	5	J Isner	7^7	6																		5	J Isner	1	6	6
		R Harrison	6^4	4				5	J Isner	7	6^3	7^7
	WC	J Sock	7^7	6				WC	J Sock	5	7^7	6^3
	Q	B Klahn	6^3	3											5	J Isner	6	3	6
		R Berankis	6^3	7	6											R Berankis	3	6	3
		J Levine	7^7	5	4				R Berankis	6	6
								2	T Haas	3	3

Qualifying

Seeds

The top five seeds receive a bye into the second round.

1. Ivo Karlović (Qualifying competition, Lucky loser)
2. Mischa Zverev (Second round)
3. Teymuraz Gabashvili (Qualifying competition)
4. Bradley Klahn (Qualified)
5. Peter Polansky (Qualifying competition)
6. Facundo Argüello (Qualified)
7. Michael Yani (First round, retired)
8. Alex Kuznetsov (First round)

Qualifiers

1. Gerald Melzer
2. Robby Ginepri
3. Facundo Argüello
4. Bradley Klahn

Lucky losers

1. Ivo Karlović

First qualifier

	First Round							Second Round							Qualifying Competition
								1	Ivo Karlović	6	6
		William Boe-Wiegaard	2	2					Florin Mergea	4	3
		Florin Mergea	6	6											1	Ivo Karlović	4	6^3
		Nicholas Edlefsen	2	2												Gerald Melzer	6	7^7
		Roman Borvanov	6	6					Roman Borvanov	7	6^2	1
		Gerald Melzer	6	6					Gerald Melzer	5	7^7	6
	8	Alex Kuznetsov	2	4

Second qualifier

	First Round							Second Round							Qualifying Competition
								2	Mischa Zverev	2	6	2
		Robby Ginepri	6	6					Robby Ginepri	6	4	6
	WC	Bayo Philips	2	0												Robby Ginepri	7^7	7^7
		Michael Venus	5	6	4										5	Peter Polansky	6^5	6^3
		Frank Moser	7	4	6				Frank Moser	6^4	6^4
								5	Peter Polansky	7^7	7^7

Third qualifier

	First Round							Second Round							Qualifying Competition
								3	Teymuraz Gabashvili	6	7^7
		Takanyi Garanganga	6	5	7				Takanyi Garanganga	2	6^1
		Scott Lipsky	4	7	5										3	Teymuraz Gabashvili	3	2
		Fritz Wolmarans	5	6	3										6	Facundo Argüello	6	6
		Chris Wettengel	7	1	6				Chris Wettengel	3	2
	WC	David Warren	2	3				6	Facundo Argüello	6	6
	6	Facundo Argüello	6	6

Fourth qualifier

	First Round							Second Round							Qualifying Competition
								4	Bradley Klahn	7^11	6
		Greg Ouellette	6	6					Greg Ouellette	6^9	4
	WC	Connor Curry	2	2											4	Bradley Klahn	6	6
		Luka Gregorc	7	6												Luka Gregorc	1	4
		Vullnet Tashi	5	1					Luka Gregorc	6	6
		John Peers	5	7	0				John Peers	4	4
	7	Michael Yani	7	5	0^r

References

• Main Draw
• Qualifying Draw