Singles
2020 Calgary National Bank Challenger
Final
Champion	Arthur Rinderknech
Runner-up	Maxime Cressy
Score	3–6, 7–6(7–5), 6–4
Events
Singles Doubles
← 2018 · Calgary National Bank Challenger · 2022 →

Ivo Karlović was the defending champion^[1] but lost in the third round to Geoffrey Blancaneaux.

Arthur Rinderknech won the title after defeating Maxime Cressy 3–6, 7–6^(7–5), 6–4 in the final.

All seeds receive a bye into the second round.

	Quarterfinals							Semifinals							Final
		Kacper Żuk	6	6
	11	Tobias Kamke	4	4
									Kacper Żuk	3	63
								8	Arthur Rinderknech	6	77
	14	Geoffrey Blancaneaux	4	2
	8	Arthur Rinderknech	6	6
															8	Arthur Rinderknech	3	77	6
															10	Maxime Cressy	6	65	4
	10	Maxime Cressy	4	713	6
		Yusuke Takahashi	6	611	4
								10	Maxime Cressy	6	4	77
								7	Liam Broady	3	6	65
	7	Liam Broady	77	2	6
	15	Gonçalo Oliveira	64	6	4

	First round							Second round							Third round							Quarterfinals
								1	V Pospisil	4	6	4
		R Sarmiento	3	4					K Żuk	6	4	6
		K Żuk	6	6												K Żuk	78	6
	Q	Felix Corwin	6	6											13	JC Aragone	66	4
	LL	D Novikov	4	4				Q	F Corwin	2	1
								13	JC Aragone	6	6
																							K Żuk	6	6
																						11	T Kamke	4	4
								11	T Kamke	6	6
		F Peliwo	6	7					F Peliwo	4	0
		Jumpei Yamasaki	1	5											11	T Kamke	77	6
	PR	B Mott	3	6	6										5	B Schnur	65	3
	WC	A Galarneau	6	4	1			PR	B Mott	4	4
								5	B Schnur	6	6

	First round							Second round							Third round							Quarterfinals
								3	I Karlović	77	6
		R Peniston	3	4					E King	62	4
		E King	6	6											3	I Karlović	67	4
		B Lock	6	65	6										14	G Blancaneaux	79	6
		S Shimabukuro	4	77	2				B Lock	2	0
								14	G Blancaneaux	6	6
																						14	G Blancaneaux	4	2
																						8	A Rinderknech	6	6
								9	J Lenz	6	3	77
		Shintaro Imai	6	6					S Imai	3	6	63
	LL	H Heliövaara	0	2											9	J Lenz	79	3	63
		C Altamirano	6	710											8	A Rinderknech	67	6	77
		Fabrizio Ornago	3	68					C Altamirano	6	3	3
								8	A Rinderknech	3	6	6

	First round							Second round							Third round							Quarterfinals
								6	T-S Kwiatkowski	6	3	66
		L Caruana	2	4					A Dougaz	4	6	78
		A Dougaz	6	6												A Dougaz	0	1r
		Jacob Grills	2	4											10	M Cressy	6	4
		P Niklas-Salminen	6	6					P Niklas-Salminen	3	2
								10	M Cressy	6	6
																						10	M Cressy	4	713	6
																							Y Takahashi	6	611	4
								16	M Guinard	77	64	64
		Tobias Simon	77	6					T Simon	63	77	77
	WC	Taha Baadi	62	2												T Simon	4	64
		Y Takahashi	6	6												Y Takahashi	6	77
		Quentin Robert	4	4					Y Takahashi	6	6
								4	T Ito	3	3

	First round							Second round							Third round							Quarterfinals
								7	L Broady	6	7
		Gage Brymer	6	77					G Brymer	1	5
	WC	G Diallo	2	62											7	L Broady	4	6	6
		N Chappell	6	6												N Chappell	6	4	2
	WC	Joshua Peck	1	4					N Chappell	6	65	6
								12	A Santillan	4	77	1
																						7	L Broady	77	2	6
																						15	G Oliveira	64	6	4
								15	G Oliveira	6	6
		MF Descotte	65	77	6				MF Descotte	4	4
	WC	C Harper	77	63	4										15	G Oliveira	66	6	6
		H Bourchier	3	67											Q	A Rybakov	78	3	4
	Q	A Rybakov	6	79				Q	A Rybakov	77	65	77
								2	G Soeda	64	77	62

• Main draw
• Qualifying draw