Men's singles
2013 Citi Open
Final
Champion	Juan Martín del Potro
Runner-up	John Isner
Score	3–6, 6–1, 6–2
Details
Draw	48 (6Q / 5WC)
Seeds	16
Events
Singles men women Doubles men women
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Alexandr Dolgopolov was the defending champion, but lost to Indian qualifier Somdev Devvarman in the second round.

Juan Martín del Potro won his third Citi Open title and second title of the year, defeating John Isner in the final, 3–6, 6–1, 6–2.

All seeds received a bye into the second round.

	Quarterfinals							Semifinals							Final
	1/WC	Juan Martín del Potro	77	6
	7	Kevin Anderson	60	3
								1/WC	Juan Martín del Potro	77	6
								3	Tommy Haas	64	3
	3	Tommy Haas	77	77
	11	Grigor Dimitrov	65	63
															1/WC	Juan Martín del Potro	3	6	6
															8	John Isner	6	1	2
		Dmitry Tursunov	6	4	77
		Marinko Matosevic	3	6	64
									Dmitry Tursunov	79	3	4
								8	John Isner	67	6	6
	8	John Isner	65	6	6
	16	Marcos Baghdatis	77	4	4

	First round							Second round							Third round							Quarterfinals
								1/WC	JM del Potro	6	7
		L Hewitt	3	5					R Harrison	1	5
		R Harrison	6	7											1/WC	JM del Potro	6	6
		D Goffin	6	6											14	B Tomic	3	3
		Y-h Lu	4	4					D Goffin	1	3
								14	B Tomic	6	6
																						1/WC	JM del Potro	77	6
																						7	K Anderson	60	3
								12	J Benneteau	3	5
	Q	M Ebden	6	1	3				M Fish	6	7
		M Fish	2	6	6											M Fish	62	1
	WC	J Duckworth	6	6											7	K Anderson	77	6
	Q	Y Sugita	2	2				WC	J Duckworth	3	6	4
								7	K Anderson	6	3	6

	First round							Second round							Third round							Quarterfinals
								3	T Haas	3	7	6
		G Žemlja	1	710	1			Q	T Smyczek	6	5	3
	Q	T Smyczek	6	68	6										3	T Haas	6	4	7
		R Berankis	6	3	2										13	I Dodig	4	6	5
		T Kamke	3	6	6				T Kamke	6	2	3
								13	I Dodig	2	6	6
																						3	T Haas	77	77
																						11	G Dimitrov	65	63
								11	G Dimitrov	77	6
		X Malisse	4	6	6				X Malisse	64	4
		R Ram	6	3	2										11	G Dimitrov	6	6
		D Istomin	6	6											6	S Querrey	3	2
		S Giraldo	3	4					D Istomin	6	3	69
								6	S Querrey	4	6	711

	First round							Second round							Third round							Quarterfinals
								5	G Simon	4	2
	LL	J Levine	65	5					D Tursunov	6	6
		D Tursunov	77	7												D Tursunov	4	6	7
		R Štěpánek	77	6												R Štěpánek	6	4	5
	WC	S Johnson	63	3					R Štěpánek	6	6
								17	M Llodra	2	1
																							D Tursunov	6	4	77
																							M Matosevic	3	6	64
								15	N Davydenko	4	5
		J Blake	2	66					M Matosevic	6	7
		M Matosevic	6	78												M Matosevic	7	79
	WC	D Kudla	62	2											4	M Raonic	5	67
	Q	S Groth	77	6				Q	S Groth	5	4
								4	M Raonic	7	6

	First round							Second round							Third round							Quarterfinals
								8	J Isner	77	77
		A Bogomolov Jr.	6	4	3			Q	A Kuznetsov	62	64
	Q	A Kuznetsov	3	6	6										8	J Isner	7	7
	Q	S Devvarman	7	6											Q	S Devvarman	5	5
	LL	R Williams	5	1				Q	S Devvarman	6	77
								9	A Dolgopolov	3	64
																						8	J Isner	65	6	6
																						16	M Baghdatis	77	4	4
								16	M Baghdatis	62	6	6
		L Lacko	1	6	6				L Lacko	77	2	4
		A Falla	6	4	4										16	M Baghdatis	6	6
	WC	J Sock	6	6											2	K Nishikori	1	2
		I Sijsling	4	2				WC	J Sock	5	2
								2	K Nishikori	7	6

	First round							Qualifying competition
								1	Matthew Ebden	6	6
		Saketh Myneni	62	6	6				Saketh Myneni	3	1
	9	Donald Young	77	3	4

	First round							Qualifying competition
	2	Rhyne Williams	6	3	6
		Robby Ginepri	2	6	3
								2	Rhyne Williams	2	77	2
								12	Samuel Groth	6	65	6
		Sanam Singh	0	5
	12	Samuel Groth	6	7

	First round							Qualifying competition
	3	Tim Smyczek	6	2	6
	Alt	Alexander Peya	0	6	3
								3	Tim Smyczek	5	6	6
								WC	Jarmere Jenkins	7	2	2
	WC	Jarmere Jenkins	6	6
	11	Farrukh Dustov	4	3

	First round							Qualifying competition
	4	Jesse Levine	6	77
		Denys Molchanov	4	65
								4	Jesse Levine	6	4	3
								8	Yūichi Sugita	2	6	6
		Sekou Bangoura	3	5
	8	Yūichi Sugita	6	7

	First round							Qualifying competition
	5	Somdev Devvarman	7	6
		Jesse Witten	5	0
								5	Somdev Devvarman	6	6
									Christian Harrison	0	1
		Christian Harrison	6	3	79
	7	Illya Marchenko	3	6	67

	First round							Qualifying competition
	6	Alex Kuznetsov	6	3	6
	WC	Mac Styslinger	3	6	1
								6	Alex Kuznetsov	6	77
								10	Malek Jaziri	4	64
	WC	Mitchell Frank	4	2
	10	Malek Jaziri	6	6

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