Singles
2003 Western & Southern Financial Group Masters
Champion	Andy Roddick
Runner-up	Mardy Fish
Score	4–6, 7–6(7–3), 7–6(7–4)
Draw	64
Seeds	16

Andy Roddick defeated Mardy Fish in the final, 4–6, 7–6^(7–3), 7–6^(7–4) to win the singles tennis title at the 2003 Cincinnati Masters.

Carlos Moyá was the defending champion, but lost in the first round to Fabrice Santoro.

Seeds

Draw

Finals

	Quarterfinals							Semifinals							Final
		Max Mirnyi	6	7
	6	Guillermo Coria	2	5
									Max Mirnyi	65	4
								7	Andy Roddick	77	6
		Mariano Zabaleta	1	2
	7	Andy Roddick	6	6
															7	Andy Roddick	4	77	77
																Mardy Fish	6	63	64
		Mardy Fish	77	6
		David Nalbandian	63	3
									Mardy Fish	77	78
								8	Rainer Schüttler	64	66
	8	Rainer Schüttler	6	6
		Robby Ginepri	2	3

Top half

Section 1

	First round							Second round							Third round							Quarterfinals
	17	F Mantilla	3	65
	WC	T Enqvist	6	77				WC	T Enqvist	62	4
		À Corretja	6	3	62				M Mirnyi	77	6
		M Mirnyi	3	6	77											M Mirnyi	6	67	6
	WC	M Chang	6	67	0										Q	H Arazi	4	79	4
	Q	H Arazi	4	79	6			Q	H Arazi	6	6
		P-H Mathieu	6	4	6				P-H Mathieu	2	1
	15	T Robredo	4	6	3																		M Mirnyi	6	7
	10	S Grosjean	3	711	3																	6	G Coria	2	5
	Q	W Moodie	6	69	6			Q	W Moodie	4	64
		A Calleri	3	3					M Youzhny	6	77
		M Youzhny	6	6												M Youzhny	2	1
		Y Kafelnikov	6	6											6	G Coria	6	6
		J-M Gambill	4	4					Y Kafelnikov	0	4	r
		T Henman	3	6	4			6	G Coria	6	5
	6	G Coria	6	4	6

Section 2

	First round							Second round							Third round							Quarterfinals
	4	C Moyá	6	3	4
		F Santoro	3	6	6				F Santoro	5	3
		F Saretta	62	6	6				F Saretta	7	6
		D Sánchez	77	1	2											F Saretta	77	2	4
		V Spadea	5	4												M Zabaleta	65	6	6
		Y El Aynaoui	7	6					Y El Aynaoui	77	4	5
		M Zabaleta	6	6					M Zabaleta	64	6	7
	14	G Kuerten	4	0																			M Zabaleta	1	2
	11	S Schalken	6	6																		7	A Roddick	6	6
		H-T Lee	4	3				11	S Schalken	1	4
		W Ferreira	1	60					J Blake	6	6
		J Blake	6	77												J Blake	62	2
		I Ljubičić	3	7	6										7	A Roddick	77	6
		N Lapentti	6	5	3				I Ljubičić	1	4
	Q	F Verdasco	3	2				7	A Roddick	6	6
	7	A Roddick	6	6

Bottom half

Section 3

	First round							Second round							Third round							Quarterfinals
	5	L Hewitt	6	4	2
		X Malisse	3	6	6				X Malisse	5	77	1
		M Philippoussis	6	3	4				M Fish	7	65	6
		M Fish	1	6	6											M Fish	6	6
		A Clément	77	6												A Clément	2	2
		A Costa	65	4					A Clément	77	5	6
		G Rusedski	2	77	6				G Rusedski	62	7	2
	12	J Novák	6	63	4																		M Fish	77	6
	13	F González	7	6																			D Nalbandian	63	3
	WC	B Vahaly	5	2				13	F González	2	4
		K Kučera	1	1					J I Chela	6	6
		J I Chela	6	6												J I Chela	4	4
		D Nalbandian	6	6												D Nalbandian	6	6
	Q	W Arthurs	0	4					D Nalbandian	77	77
	Q	S Draper	6	3	610			3	R Federer	64	65
	3	R Federer	4	6	712

Section 4

	First round							Second round							Third round							Quarterfinals
	8	R Schüttler	6	7
	Q	S Koubek	2	5				8	R Schüttler	3	6	77
		F Vicente	5	6	4				J Nieminen	6	3	64
		J Nieminen	7	3	6										8	R Schüttler	7	3	6
	WC	T Martin	6	6											WC	T Martin	5	6	3
		J Acasuso	3	4				WC	T Martin	77	6
		F López	61	6	77				F López	63	4
	9	P Srichaphan	77	4	65																	8	R Schüttler	6	6
	16	M Verkerk	6	3	1																		R Ginepri	2	3
	Q	N Okun	3	6	6			Q	N Okun	65	4
		R Štěpánek	1	6	0				R Ginepri	77	6
		R Ginepri	6	3	6											R Ginepri	6	77
		G Gaudio	6	6												G Gaudio	1	64
	Q	R Kendrick	4	4					G Gaudio	63	77	6
		N Davydenko	0	2				2	J C Ferrero	77	65	4
	2	J C Ferrero	6	6

References

• 2003 Western & Southern Financial Group Masters Draw