Urbana – Singles
2021 JSM Challenger of Champaign–Urbana
Final
Champion	Stefan Kozlov
Runner-up	Aleksandar Vukic
Score	5–7, 6–3, 6–4
Events
Singles Doubles
← 2019 · JSM Challenger of Champaign–Urbana · 2022 →

J. J. Wolf was the defending champion^[1] but lost in the semifinals to Stefan Kozlov.

Kozlov won the title after defeating Aleksandar Vukic 5–7, 6–3, 6–4 in the final.

	Semifinals							Final
		Yosuke Watanuki	68	4
	4	Aleksandar Vukic	710	6
								4	Aleksandar Vukic	7	3	4
								8	Stefan Kozlov	5	6	6
	3	J. J. Wolf	2	3
	8	Stefan Kozlov	6	6

	First round							Second round							Quarterfinals							Semifinals
	1	D Altmaier	6	6
		M Jaziri	3	4				1	D Altmaier	2	1
		A Galarneau	4	6	0				Yo Watanuki	6	6
		Yo Watanuki	6	4	6											Yo Watanuki	6	6
		P Krstin	7	7											Q	B Shelton	2	1
	Q	A Kadhe	5	5					P Krstin	6	0	1
	Q	B Shelton	3	6	6			Q	B Shelton	4	6	6
	7	B Rola	6	4	4																		Yo Watanuki	68	4
	4	A Vukic	6	6																		4	A Vukic	710	6
		T-l Wu	3	3				4	A Vukic	6	6
	WC	A Kovacevic	5	6	65			Q	G Brouwer	4	4
	Q	G Brouwer	7	3	77										4	A Vukic	6	6
		G Soeda	6	6												G Soeda	2	2
		T-S Kwiatkowski	1	4					G Soeda	6	5	6
		M Torpegaard	2	6	4			5	J Jung	4	7	4
	5	J Jung	6	3	6

	First round							Second round							Quarterfinals							Semifinals
	6	P Gunneswaran	5	1
	WC	V Kirkov	7	6				WC	V Kirkov	6	6
		Em Nava	3	65					N Chappell	2	3
		N Chappell	6	77											WC	V Kirkov	3	2
		K Uchida	6	3											3	J. J. Wolf	6	6
		Y Uchiyama	4	1r					K Uchida	3	4
		T Ito	3	6	3			3	J. J. Wolf	6	6
	3	J. J. Wolf	6	3	6																	3	J. J. Wolf	2	3
	8	S Kozlov	3	6	6																	8	S Kozlov	6	6
		JC Aragone	6	3	4			8	S Kozlov	6	6
	Q	K Smith	5					Q	K Smith	3	1
		M Mmoh	3r												8	S Kozlov	6	6
	WC	Ezekiel Clark	6	3	3										2	M Krueger	4	4
		C Harrison	4	6	6				C Harrison	3	6	4
		N Mejía	3	3				2	M Krueger	6	1	6
	2	M Krueger	6	6

• Main draw
• Qualifying draw