Singles
2021 Sánchez-Casal Cup
Champion	Dimitar Kuzmanov
Runner-up	Hugo Gaston
Score	6–3, 6–0

Carlos Alcaraz was the defending champion^[1] but chose not to defend his title.

Dimitar Kuzmanov won the title after defeating Hugo Gaston 6–3, 6–0 in the final.

Seeds

Draw

Finals

	Semifinals							Final
	1	Hugo Gaston	6	0	6
		Alexandre Müller	2	6	0
								1	Hugo Gaston	3	0
									Dimitar Kuzmanov	6	6
		Dimitar Kuzmanov	7	77
	2	Alex Molčan	5	65

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	H Gaston	7	6
		A Collarini	5	2				1	H Gaston	6	6
	LL	O Krutykh	6	6				LL	O Krutykh	0	2
	WC	P Llamas Ruiz	2	2											1	H Gaston	6	6
		F Horanský	6	2	7										Q	N Álvarez Varona	2	1
		M Marterer	4	6	5				F Horanský	4	3
	Q	N Álvarez Varona	6	77				Q	N Álvarez Varona	6	6
	8	J Lehečka	2	61																		1	H Gaston	6	0	6
	3	B Zapata Miralles	2	0r																			A Müller	2	6	0
		J Barranco Cosano	6	1					J Barranco Cosano	3	2
	Alt	A Andreev	4	1r					A Müller	6	6
		A Müller	6	4												A Müller	6	6
		D Popko	6	6											Q	M Martineau	3	2
		T Lamasine	3	2					D Popko	62	2
	Q	M Martineau	6	6				Q	M Martineau	77	6
	6	M Polmans	4	3

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	LL	A López San Martín	1	0
		N Borges	6	6					N Borges	66	5
	WC	N Sánchez Izquierdo	5	2					T Gabashvili	78	7
		T Gabashvili	7	6												T Gabashvili	2	0
		D Kuzmanov	6	6												D Kuzmanov	6	6
		T Robredo	0	1					D Kuzmanov	6	6
	Q	Georgii Kravchenko	6	3	1			4	D Džumhur	4	4
	4	D Džumhur	3	6	6																		D Kuzmanov	7	77
	5	N Milojević	7	0	6																	2	A Molčan	5	65
	Q	Y Oliel	5	6	4			5	N Milojević	5	2
		P Krstin	4	4					N Kuhn	7	6
		N Kuhn	6	6												N Kuhn	3	2
		M Guinard	6	64	1										2	A Molčan	6	6
		T Skatov	3	77	6				T Skatov	1	66
	WC	A Moro Cañas	1	3				2	A Molčan	6	78
	2	A Molčan	6	6

References

External links

• Main draw
• Qualifying draw