Men's singles
2015 Challenger Banque Nationale de Granby
Champion	Vincent Millot
Runner-up	Philip Bester
Score	6–4, 6–4

Hiroki Moriya was the defending champion, but decided not to participate this year.

Vincent Millot won the title, defeating Philip Bester 6–4, 6–4 in the final.

Seeds

Draw

Finals

	Semifinals							Final
		Vincent Millot	6	6
	7	Matteo Donati	4	1
									Vincent Millot	6	6
									Philip Bester	4	4
	4	Yoshihito Nishioka	65	6	3
		Philip Bester	77	3	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	B Becker	2	67
		P Polansky	6	79					P Polansky	3	6	5
		F Peliwo	62	4					E Quigley	6	0	7
		E Quigley	77	6												E Quigley	77	4	3
		E Couacaud	6	3	2											V Millot	64	6	6
	PR	Dennis Nevolo	4	6	6			PR	D Nevolo	3	5
	WC	Isade Juneau	2	2					V Millot	6	7
		V Millot	6	6																			V Millot	6	6
	3	G Soeda	1	6	6																	7	M Donati	4	1
		Hiroyasu Ehara	6	3	0			3	G Soeda	2	2
	Q	N Kryvonos	5	1					Y Uchiyama	6	6
		Y Uchiyama	7	6												Y Uchiyama	3	2
		Shuichi Sekiguchi	3	6	6										7	M Donati	6	6
		F Dancevic	6	3	4				S Sekiguchi	4	1
		A El Mihdawy	2	3				7	M Donati	6	6
	7	M Donati	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	8	D King	6	6
	Q	R Sarmiento	2	3				8	D King	5	3
	Q	A Whittington	3	2				Q	F Auger-Aliassime	7	6
	Q	F Auger-Aliassime	6	6											Q	F Auger-Aliassime	6	2	1
		A Bossel	4	0											4	Y Nishioka	4	6	6
		L Saville	6	6					L Saville	3	2
	WC	B Schnur	3	710	2			4	Y Nishioka	6	6
	4	Y Nishioka	6	68	6																	4	Y Nishioka	65	6	3
	6	M Authom	6	65	0r																		P Bester	77	3	6
		Erik Crepaldi	4	77	3				E Crepaldi	3	77	3
	LL	Jean-Yves Aubone	6	6				LL	J-Y Aubone	6	65	6
	WC	Pavel Krainik	4	2											LL	J-Y Aubone	5	4
	WC	D Shapovalov	6	4	4											P Bester	7	6
		A Bolt	3	6	6				A Bolt	4	3
		P Bester	77	6					P Bester	6	6
	2	L Lacko	65	4

References

• Main Draw
• Qualifying Draw