2015 Guzzini Challenger – Singles

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
• # Ričardas Berankis (final)

• # 🇧🇪 Ruben Bemelmans (quarterfinals)

• # 🇵🇱 Michał Przysiężny (semifinals)

• # 🇷🇺 Alexander Kudryavtsev (first round)

• # 🇩🇪 Peter Gojowczyk (second round)

• # 🇯🇵 Hiroki Moriya (first round)

• # 🇧🇪 Niels Desein (first round, retired)

• # 🇭🇺 Márton Fucsovics (semifinals)