Singles
2003 TD Waterhouse Cup
2002 Champion	Paradorn Srichaphan
Final
Champion	Paradorn Srichaphan
Runner-up	James Blake
Score	6–2, 6–4
Events
Singles Doubles
← 2002 · TD Waterhouse Cup · 2004 →

Paradorn Srichaphan was the defending champion and won in the final 6–2, 6–4 against James Blake.

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.

	First round							Second round							Quarterfinals							Semifinals							Final
	1	P Srichaphan	6	6
		N Davydenko	3	4				1	P Srichaphan	6	6
		À Corretja	5	2					S Sargsian	3	4
		S Sargsian	7	6											1	P Srichaphan	6	6
		A Clément	4	4											Q	J Morrison	4	3
	Q	J Morrison	6	6				Q	J Morrison	79	6
		M Youzhny	6	6					M Youzhny	67	3
	5	F Mantilla	2	1																		1	P Srichaphan	6	6
	4	F González	6	68	0																	WC	N Kiefer	0	2
		J I Chela	4	710	6				J I Chela	77	6
		F Vicente	65	1					O Rochus	63	1
		O Rochus	77	6												J I Chela	1	0	r
	WC	N Kiefer	4	77	6										WC	N Kiefer	6	3
		P-H Mathieu	6	64	3			WC	N Kiefer	6	6
		F Saretta	3						F Saretta	3	1
	8	A Costa	0	r																									1	P Srichaphan	6	6
	6	A Calleri	6	7																										James Blake	2	4
		J-M Gambill	4	5				6	A Calleri	1	4
		J Nieminen	6	1					J Nieminen	6	6
		F López	3	1	r											J Nieminen	6	2	3
		J Björkman	1	64												J Blake	4	6	6
		J Blake	6	77					J Blake	6	6
		J Acasuso	6	3	5			3	T Robredo	3	4
	3	T Robredo	2	6	7																		J Blake	6	6
	7	Y El Aynaoui	64	6	6																	7	Y El Aynaoui	3	1
	Q	F Verdasco	77	4	0			7	Y El Aynaoui	77	3
	Q	R de Voest	6	6				Q	R de Voest	63	0	r
	WC	M Chang	2	3											7	Y El Aynaoui	77	6
		D Sánchez	6	4	3										WC/2	G Kuerten	64	4
	Q	K Beck	2	6	6			Q	K Beck	5	3
	LL	D Hrbatý	4	63				WC/2	G Kuerten	7	6
	WC/2	G Kuerten	6	77

• 2003 TD Waterhouse Cup draw
• 2003 TD Waterhouse Cup Qualifying draw