Singles
2021 Oeiras Ladies Open
Champion	Polona Hercog
Runner-up	Clara Burel
Score	Walkover

This was the first edition of the tournament.^[1]

Polona Hercog won the title after Clara Burel withdrew before the final.

Seeds

All seeds receive a bye into the second round.

Draw

Finals

	Quarterfinals							Semifinals							Final
	1	Polona Hercog	6	6
	SE	Lucia Bronzetti	3	2
								1	Polona Hercog	6	3	6
								3	Anhelina Kalinina	3	6	3
	3	Anhelina Kalinina	6	6
		Eva Guerrero Álvarez	1	2
															1	Polona Hercog	w/o
															5	Clara Burel
	5	Clara Burel	5	6	6
	13	Francesca Jones	7	4	2
								5	Clara Burel	4	6	6
								8	Georgina García Pérez	6	4	1
	8	Georgina García Pérez	6	6
		Despina Papamichail	4	1

Top half

Section 1

	First round							Second round							Third round							Quarterfinals
								1	P Hercog	w/o
		N-l Han	2	3					E Gorgodze
		E Gorgodze	6	6											1	P Hercog	6	1	6
	PR	A Dulgheru	77	1	6										PR	A Dulgheru	4	6	4
		P Özgen	63	6	2			PR	A Dulgheru	6	2	6
								15	M Melnikova	3	6	3
																						1	P Hercog	6	6
																						SE	L Bronzetti	3	2
								11	D Snigur	5	6	6
		R Hogenkamp	1	6	2			WC	F Jorge	7	4	1
	WC	F Jorge	6	3	6										11	D Snigur	2	2
	SE	L Bronzetti	7	7											SE	L Bronzetti	6	6
	Q	S-j Jang	5	5				SE	L Bronzetti	6	6
								6	M Minella	3	4

Section 2

	First round							Second round							Third round							Quarterfinals
								3	A Kalinina	6	6
	Q	D Parry	5	1				Q	O Sáez Larra	3	1
	Q	O Sáez Larra	7	6											3	A Kalinina	6	4	6
	Q	S Lamens	2	6	6										Q	S Lamens	2	6	4
	WC	B Haddad Maia	6	4	3			Q	S Lamens	2	6	6
								16	Jia Lu	6	3	4
																						3	A Kalinina	6	6
																							E Guerrero Álvarez	1	2
								12	N Kostić	6	1	714
		I Burillo Escorihuela	6	6					I Burillo Escorihuela	1	6	612
	Q	S Wagner	4	1											12	N Kostić	4	1
		E Guerrero Álvarez	1	7	6											E Guerrero Álvarez	6	6
		T Mrdeža	6	5	4				E Guerrero Álvarez	5	6	6
								7	C Paquet	7	1	4

Bottom half

Section 3

	First round							Second round							Third round							Quarterfinals
								5	C Burel	6	6
		C Perrin	6	6					C Perrin	1	0
		T Lukas	0	4											5	C Burel	7	77
		V Kan	4	2												J Niemeier	5	63
		J Niemeier	6	6					J Niemeier	6	4	6
								9	M Bolkvadze	0	6	4
																						5	C Burel	5	6	6
																						13	F Jones	7	4	2
								13	F Jones	6	4	6
	Q	F Di Sarra	1	2					V Grammatikopoulou	3	6	3
		V Grammatikopoulou	6	6											13	F Jones	6	6
		I Shinikova	64	2											LL	M Bassols Ribera	3	3
	Q	K Volynets	77	6				Q	K Volynets	3	64
								LL	M Bassols Ribera	6	77

Section 4

	First round							Second round							Third round							Quarterfinals
								8	G García Pérez	78	1	6
		M Zanevska	6	6					M Zanevska	66	6	4
	WC	I Murta	0	0											8	G García Pérez	6	6
	WC	AF Santos	61	3											10	R Šramková	2	4
	WC	E Hamaliy	77	6				WC	E Hamaliy	1	0
								10	R Šramková	6	6
																						8	G García Pérez	6	6
																							D Papamichail	4	1
								14	M Di Giuseppe	1	4
	Q	S Herrmann	2	6	66				D Papamichail	6	6
		D Papamichail	6	1	78											D Papamichail	6	6
	JE	V Jiménez Kasintseva	6	2	0										2	G Minnen	4	0
		RL Jani	4	6	6				RL Jani	4	5
								2	G Minnen	6	7

References

• Draws