Singles
2021 IBG Prague Open
Champion	Franco Agamenone
Runner-up	Ryan Peniston
Score	6–3, 6–1

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

Franco Agamenone won the title after defeating Ryan Peniston 6–3, 6–1 in the final.

Seeds

Draw

Finals

	Semifinals							Final
		Genaro Alberto Olivieri	1	5
		Ryan Peniston	6	7
									Ryan Peniston	3	1
									Franco Agamenone	6	6
		Franco Agamenone	6	6
		Igor Sijsling	3	0

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	E Karlovskiy	6	6
		H Casanova	2	3				1	E Karlovskiy	5	6	6
		R Molleker	7	4	6				R Molleker	7	4	2
	WC	A Paulson	5	6	1										1	E Karlovskiy	78	4	4
		Y-h Hsu	6	6												GA Olivieri	66	6	6
		A Vatutin	3	0					Y-h Hsu	3	4
		GA Olivieri	6	6					GA Olivieri	6	6
	5	J Forejtek	2	4																			GA Olivieri	1	5
	3	E Tiurnev	66	2																			R Peniston	6	7
		M Pecotić	78	6					M Pecotić	3	67
	Q	F Díaz Acosta	6	6				Q	F Díaz Acosta	6	79
	PR	M Donati	1	3											Q	F Díaz Acosta	3	1
	Q	Z Piros	4	3												R Peniston	6	6
	Q	U Ignatik	6	6				Q	U Ignatik	2	6	3
		R Peniston	6	4					R Peniston	6	2	6
	8	M Zekić	0	1r

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	M Geerts	6	6
	WC	Martin Krumich	2	4				6	M Geerts	6	6
		J Härteis	4	2				Q	A Rybakov	2	2
	Q	A Rybakov	6	6											6	M Geerts	7	5	3
		N Sánchez Izquierdo	3	3												F Agamenone	5	7	6
		F Agamenone	6	6					F Agamenone	7	6
		A Cazaux	4	66				4	G Blancaneaux	5	4
	4	G Blancaneaux	6	78																			F Agamenone	6	6
	7	FC Jianu	64	2																			I Sijsling	3	0
		M Pucinelli de Almeida	77	6					M Pucinelli de Almeida	2	6	2r
	WC	Daniel Siniakov	4	3					I Sijsling	6	2	3
		I Sijsling	6	6												I Sijsling	7	6
		K Uchida	6	3	6											K Uchida	5	3
		N Chappell	4	6	1				K Uchida	77	7
		R Ortega Olmedo	1	1				2	A Ritschard	64	5
	2	A Ritschard	6	6

References

External links

• Main draw
• Qualifying draw