2021 Antalya Challenger III – Singles

Singles
2021 Antalya Challenger III
Champion	Nuno Borges
Runner-up	Ryan Peniston
Score	6–4, 6–3

Carlos Taberner was the defending champion^[1] but was not eligible to compete in the tournament due to his ATP ranking.

Nuno Borges won the title after defeating Ryan Peniston 6–4, 6–3 in the final.

	Semifinals							Final
		Javier Barranco Cosano	4	62
		Ryan Peniston	6	77
									Ryan Peniston	4	3
								6	Nuno Borges	6	6
	6	Nuno Borges	6	6
		Eduard Esteve Lobato	3	3

	First round							Second round							Quarterfinals							Semifinals
	1/WC	C İlkel	6	6
	Alt	Y-h Hsu	3	4				1/WC	C İlkel	63	3
		J Barranco Cosano	77	6					J Barranco Cosano	77	6
		O Roca Batalla	64	4												J Barranco Cosano	6	4	6
	Q	M Veldheer	1	4												FC Jianu	1	6	4
		FC Jianu	6	6					FC Jianu	65	6	6
		M Zekić	62	3				7	G Blancaneaux	77	4	0
	7	G Blancaneaux	77	6																			J Barranco Cosano	4	62
	4	D Ajduković	6	5	7																		R Peniston	6	77
		N Chappell	4	7	5			4	D Ajduković	6	6
	Q	T Cação	6	6				Q	T Cação	2	1
	WC	A Metreveli	3	2											4	D Ajduković	2	7	62
		R Peniston	2	6	6											R Peniston	6	5	77
		N Fatić	6	1	3				R Peniston	2	6	6
		D Svrčina	6	0					D Svrčina	6	4	2
	8	G Oliveira	4	0r

	First round							Second round							Quarterfinals							Semifinals
	6	N Borges	6	6
		E Kırkın	4	3				6	N Borges	6	6
		E Tiurnev	65	7	3r			WC	Y Erel	4	0
	WC	Y Erel	77	5	3										6	N Borges	6	6
		N Hardt	6	6												N Hardt	2	4
		A Dougaz	2	2					N Hardt	6	7
		R Bonadio	64	6	1			3	J Domingues	4	5
	3	J Domingues	77	4	6																	6	N Borges	6	6
	5	C-h Tseng	2	7	67																		E Esteve Lobato	3	3
		F Misolic	6	5	79				F Misolic	2	3
	Alt	D-h Lee	2	3					E Esteve Lobato	6	6
		Eduard Esteve Lobato	6	6												E Esteve Lobato	6	6
		N Sánchez Izquierdo	1	3											2	R Ramanathan	2	0
	Q	O Crawford	6	6				Q	O Crawford	5	4
	Q	L Wessels	2	3				2	R Ramanathan	7	6
	2	R Ramanathan	6	6

• Main draw
• Qualifying draw