Singles
2021 Sardegna Open
Champion	Lorenzo Sonego
Runner-up	Laslo Đere
Score	2–6, 7–6(7–5), 6–4
Draw	28
Seeds	8

Lorenzo Sonego defeated defending champion Laslo Đere in the final, 2–6, 7–6^(7–5), 6–4 to win the men's singles title at the 2021 Sardegna Open. With the victory, Sonego became the first Italian in 15 years to capture an ATP Tour title on home soil.

Seeds

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

Draw

Finals

	Semifinals							Final
		Laslo Đere	6	6
	4	Nikoloz Basilashvili	2	0
									Laslo Đere	6	65	4
								3	Lorenzo Sonego	2	77	6
	3	Lorenzo Sonego	6	5	6
	2	Taylor Fritz	4	7	1

Top half

	First round							Second round							Quarterfinals							Semifinals
								1	D Evans	1	6	68
		L Musetti	6	6					L Musetti	6	1	710
		D Novak	0	1												L Musetti	4	6	2
	WC	F Gaio	4	2												L Đere	6	4	6
		L Đere	6	6					L Đere	6	6
		F Coria	65	6	3			6	J Millman	3	3
	6	J Millman	77	3	6																		L Đere	6	6
																						4	N Basilashvili	2	0
								4	N Basilashvili	4	6	7
	Q	S Nagal	6	1	3			Q	J Kovalík	6	4	5
	Q	J Kovalík	3	6	6										4	N Basilashvili	7	4	6
	Q	M-A Hüsler	1	3											5	J-L Struff	5	6	3
	Q	L Broady	6	6				Q	L Broady	4	2
		J Sousa	6	1	5			5	J-L Struff	6	6
	5	J-L Struff	1	6	7

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	8	T Paul	68	7	3
		Y Hanfmann	710	5	6				Y Hanfmann	7	6
		M Cecchinato	6	4	6				M Cecchinato	5	1
	WC	T Fabbiano	4	6	3											Y Hanfmann	6	66	3
		G Simon	1	6	6										3	L Sonego	3	78	6
		S Travaglia	6	3	4				G Simon	4	1
								3	L Sonego	6	6
																						3	L Sonego	6	5	6
	7	G Pella	4	0																		2	T Fritz	4	7	1
		E Gerasimov	6	6					E Gerasimov	4	65
		A Bedene	1	7	77				A Bedene	6	77
	WC	G Zeppieri	6	5	63											A Bedene	3	4
		A Martin	6	2	6										2	T Fritz	6	6
		J Veselý	4	6	1				A Martin	2	64
								2	T Fritz	6	77

Qualifying

Qualifying draw

First qualifier

	First round							Qualifying competition
	1	Jozef Kovalík	6	6
		Malek Jaziri	3	1
								1	Jozef Kovalík	77	4	77
									Matteo Viola	63	6	64
		Matteo Viola	64	6	6
	5	Brandon Nakashima	77	1	2

Second qualifier

	First round							Qualifying competition
	2	Cedrik-Marcel Stebe	6	6
		Matthew Ebden	2	3
								2	Cedrik-Marcel Stebe	5	1r
								6	Marc-Andrea Hüsler	7	1
		Teymuraz Gabashvili	4	4
	6	Marc-Andrea Hüsler	6	6

Third qualifier

	First round							Qualifying competition
	3	Sumit Nagal	6	6
		Andrea Pellegrino	3	4
								3	Sumit Nagal	6	6
									Maxime Janvier	2	1
		Maxime Janvier	6	6
	7	Maxime Cressy	4	3

Fourth qualifier

	First round							Qualifying competition
	4	Jurij Rodionov	6	77
	WC	Francesco Forti	4	64
								4	Jurij Rodionov	5	6	0
								8	Liam Broady	7	4	6
	WC	Jacopo Berrettini	4	1
	8	Liam Broady	6	6

External links

• Main draw
• Qualifying draw