Singles
2021 Nur-Sultan Challenger
Champion	Mackenzie McDonald
Runner-up	Jurij Rodionov
Score	6–1, 6–2

There was no defending champion as the last edition of the tournament was canceled due to the COVID-19 pandemic.^[1]

Mackenzie McDonald won the title after defeating Jurij Rodionov 6–1, 6–2 in the final.

Seeds

Draw

Finals

	Semifinals							Final
		Mackenzie McDonald	6	6
	5	Henri Laaksonen	2	1
									Mackenzie McDonald	6	6
								6	Jurij Rodionov	1	2
	4	Prajnesh Gunneswaran	2	6	3
	6	Jurij Rodionov	6	3	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	M Kukushkin	5	5
		M McDonald	7	7					M McDonald	6	6
		D Istomin	66	6	6				D Istomin	2	3
	WC	D Yevseyev	78	3	3											M McDonald	6	3	77
		F Ferreira Silva	6	6												F Ferreira Silva	4	6	63
		S Ofner	3	4					F Ferreira Silva	6	3	6
	Q	P Kotov	6	79				Q	P Kotov	1	6	4
	8	B Rola	4	67																			M McDonald	6	6
	Q	B Bobrov	2	1																		5	H Laaksonen	2	1
		K Żuk	6	6					K Żuk	6	4
	Alt	T-l Wu	6	7				Alt	T-l Wu	3	2r
		H Grenier	4	5												K Żuk	4	3
	Q	R Peniston	3	6	4										5	H Laaksonen	6	6
		B Gojo	6	1	6				B Gojo	6	5	2
	LL	R Quiroz	4	2				5	H Laaksonen	1	7	6
	5	H Laaksonen	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	M Kližan	6	4	77
	WC	T Skatov	4	6	65			7	M Kližan	67	6	77
		D Popko	4	6	67			Alt	U Blanch	79	2	65
	Alt	U Blanch	6	2	79										7	M Kližan	3	6	4
		A Müller	68	6	1										4	P Gunneswaran	6	4	6
		B Schnur	710	3	6				B Schnur	6	3	0
	WC	Dostanbek Tashbulatov	2	3				4	P Gunneswaran	3	6	6
	4	P Gunneswaran	6	6																		4	P Gunneswaran	2	6	3
	6	J Rodionov	6	6																		6	J Rodionov	6	3	6
	LL	I Nedelko	3	3				6	J Rodionov	6	6
		T Ito	6	6					T Ito	3	2
	Q	V Manafov	4	4											6	J Rodionov	6	6
		P Polansky	3	4												T Macháč	2	3
		M Marterer	6	6					M Marterer	4	6	3
		T Macháč	6	3	6				T Macháč	6	3	6
	2	E Donskoy	3	6	1

References

External links

• Main draw
• Qualifying draw