Éric Prodon chose to not defend his last year's title.
Jaroslav Pospíšil is the defending champion.
Evgeny Donskoy won the title after defeating Adrian Ungur 6–1, 6–3 in the final.
Ivo Minář is the defending champion.
Martin Kližan won the title after defeating Filippo Volandri 6–3, 6–2 in the final.
Adrian Ungur was the defending champion but decided not to participate.
Gianluca Naso won the final against Andreas Haider-Maurer 6–4, 7–5.
Adrian Ungur became the inaugural champion of Sibiu Challenger by defeating fellow countryman Victor Hănescu in the final, 6–4, 7–6(7–1).
Iñigo Cervantes-Huegun was the defending champion but chose not to compete.
Andrey Kuznetsov won the title after defeating Adrian Ungur 6–3, 6–3 in the final.
Simon Greul defeated Gastão Elias 2–6, 7–6(7–5), 7–5 in the final to win the title.
Carlos Berlocq was the defending champion but decided not to participate.
Horacio Zeballos won the title, defeating Julian Reister 6–3, 6–2 in the final.
Victor Hănescu was the defending champion but decided not to participate.
Andreas Haider-Maurer defeated Rubén Ramírez Hidalgo 6–4, 3–6, 6–4 in the final to take the title.
Paolo Lorenzi was the defending champion, but was defeated eventual champion Pablo Carreño Busta, who defeated Grégoire Burquier 6–4, 6–4 in the final
Andreas Haider-Maurer is the defending champion, and successfully defended his championship by defeating Gerald Melzer in all-Austrian final by a score of 6–7(9–11), 6–4, 6–2.
Adrian Ungur was the defending champion, but lost in the semifinals to Jaroslav Pospíšil.
Rubén Ramírez Hidalgo was the defending champion, but decided not to compete.
Federico Delbonis was the defending champion, but decided not to compete.
Jiří Veselý was the defending champion, but decided not to participate.
Mikhail Kukushkin was the defending champion but chose to compete in the 2014 Aegon Championships instead.
Andreas Haider-Maurer was the defending champion, but lost in the quarterfinals to Adam Pavlásek.
David Goffin won the title, beating Blaž Rola in the final, 6–4, 6–2.
Andreas Haider-Maurer defended his title, beating Guillaume Rufin 6–3, 6–2
Julian Reister was the current champions, but chose not to compete this year.
Federico Delbonis was the defending champion, but lost to Facundo Bagnis in the first round.
Pablo Cuevas won the title, defeating Luca Vanni in the final, 6–4, 3–6, 7–6(7–4).
