Singles
2015 Guzzini Challenger
Champion	Mirza Bašić
Runner-up	Ričardas Berankis
Score	6–4, 3–6, 7–6(7–4)

Gilles Müller was the defending champion, but he did not participate in 2015.

Mirza Bašić won the title defeating Ričardas Berankis in the final, 6–4, 3–6, 7–6^(7–4).

Seeds

Draw

Finals

	Semifinals							Final
	1	Ričardas Berankis	6	6
	8	Márton Fucsovics	4	3
								1	Ričardas Berankis	4	6	64
									Mirza Bašić	6	3	77
	3	Michał Przysiężny	4	6	1
		Mirza Bašić	6	3	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	R Berankis	5	6	6
	Q	Sébastien Boltz	7	2	2			1	R Berankis	6	6
	WC	S Napolitano	0	4					D Guez	4	3
		D Guez	6	6											1	R Berankis	6	6
		M Safwat	1	6	67										SE	S Caruso	1	3
	Q	I Bozoljac	6	3	79			Q	I Bozoljac	3	2
	SE	S Caruso	2	6	2			SE	S Caruso	6	6
	7	N Desein	6	0	0r																	1	R Berankis	6	6
	4	A Kudryavtsev	3	5																		8	M Fucsovics	4	3
		A Lazov	6	7					A Lazov	0	3
		D Wu	6	5	3				Y Mertens	6	6
		Y Mertens	2	7	6											Y Mertens	4	4
	WC	M Berrettini	4	3											8	M Fucsovics	6	6
	Q	F Cipolla	6	6				Q	F Cipolla	6	4	5
		Connor Smith	2	2				8	M Fucsovics	2	6	7
	8	M Fucsovics	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	H Moriya	5	6	67
		J Milton	7	2	79				J Milton	3	6	6
	WC	Edoardo Eremin	6	6				WC	E Eremin	6	1	3
	Q	J Witten	3	1												J Milton	3	63
		R Boutillier	60	3											3	M Przysiężny	6	77
		Henrique Cunha	77	6					H Cunha	1	4
	LL	C Wang	0	7	3			3	M Przysiężny	6	6
	3	M Przysiężny	6	5	6																	3	M Przysiężny	4	6	1
	5	P Gojowczyk	7	6																			M Bašić	6	3	6
	Alt	Q Halys	5	2				5	P Gojowczyk	66	3
		M Bašić	6	6					M Bašić	78	6
		M Zekić	4	2												M Bašić	4	6	6
		D Zhyrmont	6	6											2	R Bemelmans	6	3	2
	WC	Giacomo Miccini	2	2					D Zhyrmont	2	4
		D Pérez Sanz	2	2				2	R Bemelmans	6	6
	2	R Bemelmans	6	6

External links

• Main draw
• Qualifying draw