2004 AIG Japan Open Tennis Championships – Women's singles

Women's singles
2004 AIG Japan Open Tennis Championships
Champion	Maria Sharapova
Runner-up	Mashona Washington
Score	6–0, 6–1
Draw	30 (4Q / 2WC)
Seeds	8

Maria Sharapova was the defending champion and successfully defender her title, by defeating Mashona Washington 6–0, 6–1 in the final.^[1][2]

The first two seeds received a bye into the second round.

	Semifinals							Final
	1	Maria Sharapova	6	6
		Tamarine Tanasugarn	2	3
								1	Maria Sharapova	6	6
									Mashona Washington	0	1
		Mashona Washington	3	7	6
	7	Klára Koukalová	6	5	2

	First round							Second round							Quarterfinals							Semifinals
								1	M Sharapova	6	1	6
		A Nakamura	3	5				Q	S Stosur	4	6	3
	Q	S Stosur	6	7											1	M Sharapova	6	6
		K Srebotnik	5	0											Q	Y Fedossova	3	4
		A Morigami	7	6					A Morigami	3	67
	Q	Y Fedossova	7	77				Q	Y Fedossova	6	79
	5	M Shaughnessy	5	65																		1	M Sharapova	6	6
	3	S Asagoe	0	4																			T Tanasugarn	2	3
		T Tanasugarn	6	6					T Tanasugarn	6	77
		B Strýcová	5	6	4				J Craybas	3	62
		J Craybas	7	4	6											T Tanasugarn	6	3
	Q	S Pe'er	6	0	2											A Kapros	1	0r
		A Kapros	2	6	6				A Kapros	6	6
	Q	S Karatantcheva	6	6				Q	S Karatantcheva	4	0
	8	A Parra Santonja	2	4

	First round							Second round							Quarterfinals							Semifinals
	6	N Pratt	0	6	4
		E Linetskaya	6	1	6				E Linetskaya	6	7
	WC	R Fujiwara	6	6				WC	R Fujiwara	4	5
		S Obata	4	4												E Linetskaya	2	1
		M Sánchez Lorenzo	2	4												M Washington	6	6
		M Washington	6	6					M Washington	6	6
		S Kleinová	6	3	4			4	K Brandi	2	2
	4	K Brandi	4	6	6																		M Washington	3	7	6
	7	K Koukalová	6	6																		7	K Koukalová	6	5	2
		M Sequera	2	2				7	K Koukalová	6	6
		Ľ Kurhajcová	77	6					Ľ Kurhajcová	2	4
		A Jidkova	65	2											7	K Koukalová	6	6
		Y-j Cho	3	4											WC	N Vaidišová	3	0
	WC	N Vaidišová	6	6				WC	N Vaidišová	6	3	6
								2	T Golovin	4	6	4

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