2021 Rancho Santa Fe Open – Singles

Singles
2021 Rancho Santa Fe Open
Champion	Rebecca Peterson
Runner-up	Elvina Kalieva
Score	6–4, 6–0

Main article: 2021 Rancho Santa Fe Open

You Xiaodi was the defending champion but chose not to participate.

Rebecca Peterson won the title, defeating Elvina Kalieva in the final, 6–4, 6–0.

Seeds

1. Rebecca Peterson (champion)
2. Fiona Ferro (semifinals, retired)
3. Madison Brengle (semifinals)
4. Zarina Diyas (second round)
5. Misaki Doi (first round)
6. Kristína Kučová (quarterfinals)
7. Renata Zarazúa (first round)
8. Polona Hercog (quarterfinals)

Draw

Key

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• Alt = Alternate
• SE = Special exempt
• PR = Protected ranking
• ITF = ITF entry
• JE = Junior exempt
• w/o = Walkover
• r = Retired
• d = Defaulted
• SR = Special ranking

Finals

	Semifinals							Final
	1	Rebecca Peterson	6	6
	3	Madison Brengle	4	2
								1	Rebecca Peterson	6	6
								Q	Elvina Kalieva	4	0
	Q	Elvina Kalieva	4	6	3
	2	Fiona Ferro	6	4	0r

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	R Peterson	6	6
	WC	H Chang	1	0				1	R Peterson	6	6
		M Hibi	6	6					M Hibi	1	1
	Q	M Partaud	3	3											1	R Peterson	6	6
	Q	A Krueger	2	2												L Cabrera	4	1
	SE	E Bektas	6	6				SE	E Bektas	6	1	65
		L Cabrera	6	6					L Cabrera	4	6	77
	7	R Zarazúa	2	2																		1	R Peterson	6	6
	3	M Brengle	6	6																		3	M Brengle	4	2
	WC	A Kiick	0	2				3	M Brengle	6	6
		R Marino	6	6					R Marino	1	2
		M Inglis	4	3											3	M Brengle	4	6	6
		K Kozlova	7	6												K Kozlova	6	1	4
	Q	T Mihalíková	5	2					K Kozlova	2	6	6
	WC	K Day	3	6	6			WC	K Day	6	3	2
	5	M Doi	6	4	3

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	8	P Hercog	65	6	7
	WC	J Failla	77	3	5			8	P Hercog	6	6
	Q	E Douglas	77	3	6			Q	E Douglas	4	2
	Q	M Manasse	64	6	2										8	P Hercog	4	3
	Q	D Hewitt	5	6	2										Q	E Kalieva	6	6
	Q	E Kalieva	7	1	6			Q	E Kalieva	6	2	6
		L Küng	0	1				4	Z Diyas	4	6	2
	4	Z Diyas	6	6																		Q	E Kalieva	4	6	3
	6	K Kučová	4	6	6																	2	F Ferro	6	4	0r
	JE	E Jacquemot	6	4	2			6	K Kučová	1	77	77
	Q	H Giavara	5	0				PR	P Hon	6	64	64
	PR	P Hon	7	6											6	K Kučová	66	6	4
		K Kawa	1	4											2	F Ferro	78	3	6
		Ar Rodionova	6	6					Ar Rodionova	2	2
		C Dolehide	2	7	2			2	F Ferro	6	6
	2	F Ferro	6	5	6

References

• Main Draw