Singles
2017 St. Petersburg Ladies' Trophy
Champion	Kristina Mladenovic
Runner-up	Yulia Putintseva
Score	6–2, 6–7(3–7), 6–4
Draw	24 (4 Q / 2 WC )
Seeds	8

The 2017 St. Petersburg Ladies' Trophy – Singles season began with Roberta Vinci (defending champion from the previous year) losing out in the quarterfinals to unseeded Kristina Mladenovic.

Mladenovic went on to win the season and achieve her first WTA singles title, defeating Yulia Putintseva in the final, 6–2, 6–7^(3–7), 6–4.

Seeds

The top four seeds received a bye into the second round.

Draw

Finals

	Semifinals							Final
	WC	Natalia Vikhlyantseva	6	2	2
		Kristina Mladenovic	4	6	6
									Kristina Mladenovic	6	63	6
									Yulia Putintseva	2	77	4
		Yulia Putintseva	3	6	6
	2	Dominika Cibulková	6	4	4

Top half

	First round							Second round							Quarterfinals							Semifinals
								1	S Halep	6	77
		A Konjuh	1	6	6				A Konjuh	4	62
		M Niculescu	6	3	2										1	S Halep
		Y Shvedova	3	4											WC	N Vikhlyantseva	w/o
	WC	N Vikhlyantseva	6	6				WC	N Vikhlyantseva	77	6
		B Bencic	2	5				8	D Kasatkina	64	2
	8	D Kasatkina	6	7																		WC	N Vikhlyantseva	6	2	2
																							K Mladenovic	4	6	6
								4	V Williams	3	1
	Q	E Mertens	65	4					K Mladenovic	6	6
		K Mladenovic	77	6												K Mladenovic	6	6
	Q	A Petkovic	6	7											6	R Vinci	1	4
		I-C Begu	1	5				Q	A Petkovic	4	4
		T Babos	3	6	4			6	R Vinci	6	6
	6	R Vinci	6	3	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	K Bertens	5	6	4
		A Beck	7	3	6				A Beck	4	0
		Y Putintseva	6	1					Y Putintseva	6	6
		J Larsson	0	0r												Y Putintseva	6	64	7
	WC	A Kalinskaya	4	5											3	S Kuznetsova	3	77	5
		D Gavrilova	6	7					D Gavrilova	1	3
								3	S Kuznetsova	6	6
																							Y Putintseva	3	6	6
	5	E Vesnina	6	6																		2	D Cibulková	6	4	4
		E Makarova	3	1				5	E Vesnina	2	6	6
	Q	K Flipkens	4	2					A Cornet	6	3	3
		A Cornet	6	6											5	E Vesnina	3	3
		J Ostapenko	0	4											2	D Cibulková	6	6
	LL	D Vekić	6	6				LL	D Vekić	2	2
								2	D Cibulková	6	6

Qualifying

Draw

First qualifier

	First round							Second round							Qualifying competition
	1	Andrea Petkovic	77	6
		Lesley Kerkhove	63	1
								1	Andrea Petkovic	6	6
									Barbara Haas	3	4
	WC	Valeriya Pogrebnyak	0	3
		Barbara Haas	6	6
															1	Andrea Petkovic	6	6
																Anastasiya Komardina	2	3
		Ksenia Lykina	1	3
		Anastasiya Komardina	6	6
									Anastasiya Komardina	6	6
									Sabina Sharipova	3	4
		Sabina Sharipova	6	4
	8	Patricia Maria Țig	2	1r

Second qualifier

	First round							Second round							Qualifying competition
	2	Kirsten Flipkens	6	6
		Viktoriya Tomova	1	2
								2	Kirsten Flipkens	3	6	6
									Paula Cristina Gonçalves	6	2	0
		Paula Cristina Gonçalves	6	6
		Veronika Kudermetova	3	4
															2	Kirsten Flipkens	6	5	7
															7	Donna Vekić	4	7	5
		Cindy Burger	6	2	63
		Viktoria Kamenskaya	2	6	77
									Viktoria Kamenskaya	2	1
								7	Donna Vekić	6	6
		Aryna Sabalenka	4	2
	7	Donna Vekić	6	6

Third qualifier

	First round							Second round							Qualifying competition
	9	Ekaterina Alexandrova	6	7
		Aliaksandra Sasnovich	4	5
								9	Ekaterina Alexandrova	5	1
									Elitsa Kostova	7	6
		Isabella Shinikova	5	6	65
		Elitsa Kostova	7	2	77
																Elitsa Kostova	3	4
																Stefanie Vögele	6	6
	WC	Valeriya Strakhova	0	2
		Stefanie Vögele	6	6
									Stefanie Vögele	7	6
								5	Denisa Allertová	5	2
	WC	Tena Lukas	6	61	5
	5	Denisa Allertová	2	77	7

Fourth qualifier

	First round							Second round							Qualifying competition
	4	Elise Mertens	6	6
		Sílvia Soler Espinosa	4	0
								4	Elise Mertens	4	6	5
									Tereza Martincová	6	4	5d
	WC	Olesya Pervushina	2	4
		Tereza Martincová	6	6
															4	Elise Mertens	6	2	6
																Maryna Zanevska	2	6	4
	PR	Michaëlla Krajicek	1	2
		Maryna Zanevska	6	6
									Maryna Zanevska	78	79
								Alt	Gabriela Dabrowski	66	67
	Alt	Gabriela Dabrowski	4	6	6
	6	Irina Khromacheva	6	3	2

References

• Main draw
• Qualifying draw