Singles
2003 JPMorgan Chase Open
Final
Champion	Kim Clijsters
Runner-up	Lindsay Davenport
Score	6–1, 3–6, 6–1
Details
Draw	48 (4WC/4Q/1LL)
Seeds	16
Events
Singles Doubles
← 2002 · LA Women's Tennis Championships · 2004 →

Chanda Rubin was the defending champion, but was forced to withdraw due to a right shoulder tendonitis. However, she recovered in time to compete in the doubles tournament, losing in the first round.

Kim Clijsters won the title by defeating Lindsay Davenport 6–1, 3–6, 6–1 in the final. This victory allowed Clijsters to reach the World No. 1 ranking, ending the 57-week reign of Serena Williams.^[1][2][3]

All seeds received a bye into the second round.

	Quarterfinals							Semifinals							Final
	1	Kim Clijsters	6	6
		Svetlana Kuznetsova	3	1
								1	Kim Clijsters	7	6
								16	Francesca Schiavone	5	4
	16	Francesca Schiavone	6	6
	Q	Nicole Pratt	2	3
															1	Kim Clijsters	6	3	6
															2	Lindsay Davenport	1	6	1
	6	Magdalena Maleeva	2	6	2
	4	Ai Sugiyama	6	4	6
								4	Ai Sugiyama	2	1
								2	Lindsay Davenport	6	6
	8	Amanda Coetzer	2	4
	2	Lindsay Davenport	6	6

	First round							Second round							Third round							Quarterfinals
								1	K Clijsters	6	6
		Y-j Cho	3	2					É Loit	1	1
		É Loit	6	6											1	K Clijsters	6	1	6
		K Srebotnik	3	1												M Sharapova	4	6	1
		M Sharapova	6	6					M Sharapova	6	2	7
								14	N Petrova	2	6	5
																						1	K Clijsters	6	6
																							S Kuznetsova	3	1
								11	S Farina Elia	7	2	6
		S Asagoe	6	3	6				S Asagoe	5	6	4
	Q	E Callens	3	6	3										11	S Farina Elia	77	4	5
		S Kuznetsova	6	77												S Kuznetsova	64	6	7
		M Serna	3	63					S Kuznetsova	4	77	6
								5	J Dokic	6	65	3

	First round							Second round							Third round							Quarterfinals
								LL	A Widjaja	4	6	4
		J Husárová	3	7	4				R Grande	6	1	6
		R Grande	6	5	6											R Grande	3	0
		T Tanasugarn	77	6											16	F Schiavone	6	6
	WC	M Pierce	62	3					T Tanasugarn	7	3	0
								16	F Schiavone	5	6	6
																						16	F Schiavone	6	6
																						Q	N Pratt	2	3
								12	E Daniilidou	2	77	3
		M Sánchez Lorenzo	61	4				Q	N Pratt	6	65	6
	Q	N Pratt	77	6											Q	N Pratt	4	6	6
		M Bartoli	3	2r											7	C Martínez	6	4	4
	Q	T Snyder	6	4				Q	T Snyder	4	3
								7	C Martínez	6	6

	First round							Second round							Third round							Quarterfinals
								6	M Maleeva	6	6
		E Likhovtseva	6	6					E Likhovtseva	3	3
		A Morigami	1	1											6	M Maleeva	6	6
		V Ruano Pascual	7	6												V Ruano Pascual	0	3
		C Black	5	3					V Ruano Pascual	6	5	7
								9	E Dementieva	3	7	5
																						6	M Maleeva	2	6	2
																						4	A Sugiyama	6	4	6
								15	A Stevenson	3	3r
	WC	V Kutuzova	6	6				WC	V Kutuzova	6	3
		L Krasnoroutskaya	4	4											WC	V Kutuzova	2	3
		V Razzano	6	2	3										4	A Sugiyama	6	6
	WC	S Obata	2	6	6			WC	S Obata	6	3	3
								4	A Sugiyama	2	6	6

	First round							Second round							Third round							Quarterfinals
								8	A Coetzer	6	6
	Q	A Parra Santonja	6	6				Q	A Parra Santonja	1	1
	WC	A Haynes	1	4											8	A Coetzer	77	6
		T Pisnik	1	3											10	M Shaughnessy	64	3
		F Zuluaga	6	6					F Zuluaga	6	3	64
								10	M Shaughnessy	3	6	77
																						8	A Coetzer	2	4
																						2	L Davenport	6	6
								13	E Bovina	6	5	5
		P Suárez	6	6					P Suárez	2	7	7
		A Molik	4	4												P Suárez	6	2	4
		B Schett	4	6	6										2	L Davenport	4	6	6
		A Frazier	6	4	4				B Schett	3	1
								2	L Davenport	6	6

• Official results archive (ITF)
• Official results archive (WTA)