Singles
2021 Delray Beach Open
Final
Champion	Hubert Hurkacz
Runner-up	Sebastian Korda
Score	6–3, 6–3
Details
Draw	28 (4 Q / 3 WC )
Seeds	8
Events
Singles Doubles
← 2020 · Delray Beach Open · 2022 →

Reilly Opelka was the defending champion,^[1] but withdrew from the event.

Hubert Hurkacz won the title, defeating Sebastian Korda in the final, 6–3, 6–3. Hurkacz did not face an opponent ranked inside the top 100 during his title run.

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

	Semifinals							Final
	Q	Christian Harrison	64	4
	4	Hubert Hurkacz	77	6
								4	Hubert Hurkacz	6	6
									Sebastian Korda	3	3
		Cameron Norrie	3	5
		Sebastian Korda	6	7

	First round							Second round							Quarterfinals							Semifinals
								1	C Garín	63	2
		TM Etcheverry	4	2				Q	C Harrison	77	6
	Q	C Harrison	6	6											Q	C Harrison	77	6
		G Mager	3	6	6											G Mager	62	4
	WC	R Harrison	6	1	4				G Mager	710	6
		M McDonald	3	4				6	S Querrey	68	1
	6	S Querrey	6	6																		Q	C Harrison	64	4
																						4	H Hurkacz	77	6
								4	H Hurkacz	6	6
		DE Galán	6	6					DE Galán	2	2
		A Martin	4	4											4	H Hurkacz	6	6
	WC	N Rubin	61	3											Q	R Quiroz	4	4
	Q	R Quiroz	77	6				Q	R Quiroz	6	6
		I Karlović	6	5	6				I Karlović	2	4
	7	P Andújar	3	7	4

	First round							Second round							Quarterfinals							Semifinals
	8	F Tiafoe	6	6
	Q	D Young	3	4				8	F Tiafoe	6	3	6
		B Fratangelo	6	6					B Fratangelo	4	6	1
	Q	K King	2	2											8	F Tiafoe	0	6	4
		C Norrie	6	6												C Norrie	6	3	6
	WC	JC Aragone	2	1					C Norrie	6	7
								3	A Mannarino	2	5
																							C Norrie	3	5
	5	T Paul	6	6																			S Korda	6	7
		J-s Nam	1	4				5	T Paul	6	3	2
		S-w Kwon	4	4					S Korda	4	6	6
		S Korda	6	6												S Korda	6	4	6
		T Bellucci	3	5											2	J Isner	3	6	3
		T Monteiro	6	7					T Monteiro	4	64
								2	J Isner	6	77

	First round							Qualifying competition
	1	Marcelo Tomás Barrios Vera	4	4
	PR	Christian Harrison	6	6
								PR	Christian Harrison	6	69	77
								WC	Zane Khan	1	711	64
	WC	Zane Khan	6	3
	6	Alexander Ritschard	3	1r

	First round							Qualifying competition
	2	Viktor Galović	6	6
		Aziz Dougaz	4	3
								2	Viktor Galović	3	5
								5	Roberto Quiroz	6	7
	Alt	Gonzalo Escobar	4	78	5
	5	Roberto Quiroz	6	66	7

	First round							Qualifying competition
	3	Gonçalo Oliveira	3	6	6
	WC	Liam Draxl	6	3	2
								3	Gonçalo Oliveira	3	3
								7	Kevin King	6	6
	Alt	Benjamin Lock	2	3
	7	Kevin King	6	6

	First round							Qualifying competition
	4	Pedro Sakamoto	6	4	2
		Donald Young	3	6	6
									Donald Young	4	6	6
									Stefan Kozlov	6	4	4
		Stefan Kozlov	5
	8	Johannes Härteis	0r

• Main draw
• Qualifying draw