2003 Tennis Masters Cup
Date	November 8–16
Edition	34th (singles) / 29th (doubles)
Category	ATP Finals
Draw	8S / 8D
Prize money	$3,700,000
Surface	Hard / outdoor
Location	Houston, United States
Venue	Westside Tennis Club
Champions
Singles
Roger Federer[1]
Doubles
Bob Bryan / Mike Bryan[2]
← 2002 · ATP Finals · 2004 →

The 2003 Tennis Masters Cup was a men's tennis tournament played on outdoor hard courts. It was the 34th edition of the year-end singles championships and the 29th edition of the year-end doubles championships, and was part of the 2003 ATP Tour. It took place at the Westside Tennis Club in Houston, Texas in the United States from November 8 through November 16, 2003.^[3]

Roger Federer defeated Andre Agassi 6–3, 6–0, 6–4

• It was Federer's 9th title of the year and the 17th of his career. It was his 1st career year-end championships title.

Bob Bryan / Mike Bryan defeated Michaël Llodra / Fabrice Santoro 6–7^(6–8), 6–3, 3–6, 7–6^(7–3), 6–4

• It was Bob Bryan's 5th title of the year and the 14th of his career. It was Mike Bryan's 5th title of the year and the 16th of his career.

Seed	Rank	Player	Grand Slam				ATP World Tour Masters 1000									Best Other					Total points	Tourn
			AUS	FRA	WIM	USO	IW	MIA	MC	ROM	HAM	CAN	CIN	MAD	PAR	1	2	3	4	5
1	1	Andy Roddick	SF 90	R128 1	SF 90	W 200	QF 25	R32 7	R64 1	R32 7	R32 7	W 100	W 100	R16 15	SF 45	W 45	W 40	W 35	F 35	F 24	867	22
2	2	Juan Carlos Ferrero	QF 50	W 200	R16 30	F 140	R64 1	R32 7	W 100	SF 45	W 100	R16 15	R32 7	R16 15	A 0	W 35	SF 27	F 24	F 24	SF 22	842	19
3	3	Roger Federer	R16 30	R128 1	W 200	R16 30	R64 1	QF 25	A 0	R16 15	F 70	SF 45	R32 7	SF 45	QF 25	W 60	W 50	W 45	W 35	W 35	725	23
4	4	Guillermo Coria	R16 30	SF 90	R128 1	QF 50	R16 15	R16 15	F 70	R16 15	W 100	R64 1	QF 25	A 0	R16 15	W 60	W 50	W 50	W 35	F 24	646	21
5	5	Andre Agassi	W 200	QF 50	R16 30	SF 90	A 0	W 100	A 0	R64 1	A 0	QF 25	A 0	A 0	A 0	W 35	W 35	SF 20	SF 18	R32 1	605	18
6	6	Rainer Schüttler	F 140	R16 30	R16 30	R16 30	SF 45	R64 1	R32 7	QF 25	R16 15	SF 45	SF 45	R32 7	QF 25	W 50	W 45	F 24	SF 22	SF 15	601	27
7	7	Carlos Moyá	R64 7	QF 50	A 0	R16 30	R16 15	F 70	SF 45	R16 15	R32 7	R64 1	R64 1	R16 15	A 0	W 60	W 35	W 35	F 35	SF 15	436	23
8	8	David Nalbandian	QF 50	R64 7	R16 30	SF 90	R64 1	R32 7	R32 7	R64 1	SF 45	F 70	QF 25	A 0	A 0	F 35	QF 8	QF 8	R16 5	R16 3	392	20
Source:[4]

Rk	Name	1	2	3	4	5	6	7	8	9	10	11	12	13	14	Total	Tour
1	Bob Bryan Mike Bryan	W 200	F 140	W 100	F 70	W 60	QF 50	SF 45	SF 45	SF 45	W 35	F 35	R16 30	QF 25	SF 22	882	25
2	Mahesh Bhupathi Max Mirnyi	F 140	W 100	W 100	W 100	F 70	W 50	QF 50	QF 50	SF 45	SF 45	W 35	F 35	F 31	SF 27	878	15
3	Jonas Björkman Todd Woodbridge	W 200	W 200	F 70	SF 45	SF 45	W 45	W 40	SF 27	QF 25	QF 25	QF 25	QF 25	SF 22	R32 15	809	17
4	Mark Knowles Daniel Nestor	F 140	W 100	SF 90	W 50	W 50	W 50	QF 50	W 45	SF 45	W 35	F 35	R16 30	QF 25	QF 25	770	22
5	Wayne Arthurs Paul Hanley	W 100	W 100	SF 90	F 70	W 50	QF 50	QF 50	W 35	F 28	QF 25	QF 25	QF 25	SF 15	QF 12	675	24
6	Michaël Llodra Fabrice Santoro	W 200	SF 90	F 70	F 70	F 70	R16 30	R16 30	QF 25	QF 25	F 24	SF 20	R32 0			654	12
—	Leander Paes David Rikl	SF 90	SF 90	F 70	W 60	QF 50	SF 45	SF 45	W 35	QF 25	QF 8	R16 0	R16 0	R16 0	R16 0	518	15
7	Martin Damm Cyril Suk	W 50	W 50	QF 50	QF 50	SF 45	SF 45	W 35	F 31	R16 30	QF 25	QF 25	QF 25	QF 25	QF 25	511	26
8	Gastón Etlis Martín Rodríguez	SF 90	QF 50	R16 30	SF 27	QF 25	QF 25	SF 22	SF 22	SF 18	SF 15	R16 15	R16 15	QF 10	QF 8	372	26

• ATP tournament profile
• Official website