Singles
2021 Mercer Tennis Classic
Champion	Madison Brengle
Runner-up	Zarina Diyas
Score	6–4, 4–6, 6–4

Catherine Bellis was the defending champion^[1] but chose not to participate.

Madison Brengle won the title, defeating Zarina Diyas in the final, 6–4, 4–6, 6–4.

Seeds

Draw

Finals

	Semifinals							Final
	1	Madison Brengle	6	6
	7	Wang Xiyu	3	4
								1	Madison Brengle	6	4	6
								2	Zarina Diyas	4	6	4
	4	Beatriz Haddad Maia	4	1
	2	Zarina Diyas	6	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	M Brengle	6	61	6
		T Andrianjafitrimo	4	77	4			1	M Brengle	7	1	6
		G Min	6	3	3				Jia Lu	5	6	2
		Jia Lu	1	6	6										1	M Brengle	77	6
	WC	E Navarro	6	6											Q	L Chirico	65	4
	WC	H Baptiste	2	4				WC	E Navarro	4	6	4
	Q	L Chirico	6	6				Q	L Chirico	6	2	6
	6	M Inglis	3	2																		1	M Brengle	6	6
	3	K Kučová	4	0r																		7	Xiy Wang	3	4
	WC	C Harrison	6	0				WC	C Harrison	7	6
		K Nara	62	4					C Dolehide	5	1
		C Dolehide	77	6											WC	C Harrison	4	6	65
		L Cabrera	7	6											7	Xiy Wang	6	3	77
	WC	UM Arconada	5	2					L Cabrera	0	2
	Q	A Kiick	0	0				7	Xiy Wang	6	6
	7	Xiy Wang	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	5	R Zarazúa	6	6
		T Maria	2	0				5	R Zarazúa	6	6
	Q	A Smith	6	5	6			Q	A Smith	4	3
	Q	W Osuigwe	0	7	4										5	R Zarazúa	0r
		K Kawa	5	4											4	B Haddad Maia	3
	Q	R Anderson	7	6				Q	R Anderson	4	3
		L Küng	0	4				4	B Haddad Maia	6	6
	4	B Haddad Maia	6	6																		4	B Haddad Maia	4	1
	8	R Marino	3	6	2																	2	Z Diyas	6	6
		K Volynets	6	2	6				K Volynets	5	4
	Q	V Duval	4	6	6			Q	V Duval	7	6
	Q	D Lao	6	0	0										Q	V Duval	1	4
		A Muhammad	2	2											2	Z Diyas	6	6
	Q	H Chang	6	6				Q	H Chang	4	5
	PR	P Hon	3	6	2			2	Z Diyas	6	7
	2	Z Diyas	6	1	6

References

• Main Draw