Singles
2012 HP Open
Champion	Heather Watson
Runner-up	Chang Kai-chen
Score	7–5, 5–7, 7–6(7–4)

Marion Bartoli was the defending champion, but chose not to compete.

Heather Watson won the title after a marathon 3 hour 12 minute battle with Chang Kai-chen. The match saw Watson hold match point before Chang came back and won the second set. Chang went up a break and had multiple match points at 5–4 before Watson broke and won a final-set tiebreak. Watson won by a score of 7–5, 5–7, 7–6^(7–4). Watson became the first British player to win the WTA Tour level since Sara Gomer in the 1988 Women's California State Championships.

Seeds

Draw

Finals

	Semifinals							Final
	1	Samantha Stosur	4	6	63
		Chang Kai-chen	6	4	77
									Chang Kai-chen	5	7	64
									Heather Watson	7	5	77
		Misaki Doi	62	5
		Heather Watson	77	7

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	S Stosur	6	6
		E Sema	4	2				1	S Stosur	1	6	6
	Q	N Luangnam	3	3					V Razzano	6	2	4
		V Razzano	6	6											1	S Stosur	6	6
		A Morita	3	2												J Hampton	2	4
		J Hampton	6	6					J Hampton	7	7
	WC	T Tanasugarn	6	6				WC	T Tanasugarn	5	5
	5	Y Shvedova	3	2																		1	S Stosur	4	6	63
	3	C McHale	3	65																			K-c Chang	6	4	77
		K-c Chang	6	77					K-c Chang	77	6
		K Date-Krumm	3	6	4				C Dellacqua	64	3
		C Dellacqua	6	3	6											K-c Chang	6	3	77
	Q	Y Zhou	7	6											8	L Robson	4	6	64
	WC	K Nara	5	4				Q	Y Zhou	4	4
		E Daniilidou	4	2				8	L Robson	6	6
	8	L Robson	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	C Scheepers	6	6
		A Glatch	4	1				7	C Scheepers	6	6
		M Lučić	4	6	6				M Lučić	2	2
	Q	L Kumkhum	6	3	4										7	C Scheepers	6	1	3
		M Doi	7	3	6											M Doi	2	6	6
		J Cohen	5	6	0				M Doi	6	6
	Q	O Puchkova	6	2				Q	O Puchkova	3	2
	4/WC	F Schiavone	4	1r																			M Doi	62	5
	6	A Medina Garrigues	3	6	6																		H Watson	77	7
		C Giorgi	6	2	2			6	A Medina Garrigues	77	2	3
		H Watson	6	6					H Watson	64	6	6
		P Hercog	4	4												H Watson	7	6
		M Johansson	2	2												P Parmentier	5	3
		P Parmentier	6	6					P Parmentier	6	6
		MJ Martínez Sánchez	6	5	4			2	J Zheng	3	4
	2	J Zheng	4	7	6

Qualifying

Draw

First qualifier

	First round							Second round							Qualifying competition
	1	Johanna Larsson	6	6
		Varatchaya Wongteanchai	4	4
								1	Johanna Larsson	1	78	6
									Miharu Imanishi	6	66	0
		Rika Fujiwara	5	2
		Miharu Imanishi	7	6
															1	Johanna Larsson	4	3
															8	Nudnida Luangnam	6	6
	WC	Robyn Beddow	2	0
		Ksenia Lykina	6	6
									Ksenia Lykina	3	4
								8	Nudnida Luangnam	6	6
	WC	Yoshimi Kawasaki	0	0
	8	Nudnida Luangnam	6	6

Second qualifier

	First round							Second round							Qualifying competition
	2	Olga Puchkova	6	6
		Zarina Diyas	1	4
								2	Olga Puchkova	6	6
									Miki Miyamura	3	1
	WC	Chihiro Takayama	2	0
		Miki Miyamura	6	6
															2	Olga Puchkova	6	6
																Aki Yamasoto	2	4
		Kazusa Ito	4	3
		Noppawan Lertcheewakarn	6	6
									Noppawan Lertcheewakarn	3	1
									Aki Yamasoto	6	6
		Aki Yamasoto	4	6	6
	5	Wang Qiang	6	3	4

Third qualifier

	First round							Second round							Qualifying competition
	3	Eugenie Bouchard	2	6	6
		Eri Hozumi	6	4	4
								3	Eugenie Bouchard	4	6	6
									Daria Gavrilova	6	1	4
		Alexandra Stevenson	1	3
		Daria Gavrilova	6	6
															3	Eugenie Bouchard	1	2
															7	Luksika Kumkhum	6	6
	WC	Miyu Kato	63	3
		Katalin Marosi	77	6
									Katalin Marosi	6	1	2
								7	Luksika Kumkhum	4	6	6
		Misa Eguchi	3	4
	7	Luksika Kumkhum	6	6

Fourth qualifier

	First round							Second round							Qualifying competition
	4	Yurika Sema	6	3	2r
	WC	Risa Ozaki	2	6	3
								WC	Risa Ozaki	3	6	2
									Shuko Aoyama	6	0	6
		Shuko Aoyama	6	6
	WC	Darija Jurak	2	2
																Shuko Aoyama	2	3
																Zhou Yimiao	6	6
		Zhou Yimiao	710	6
	WC	Riko Sawayanagi	68	2
									Zhou Yimiao	6	77
								6	Junri Namigata	2	61
		Erika Takao	2	5
	6	Junri Namigata	6	7

References

• Main Draw
• Qualifying Draw