Bigon coached his first team,
Reggina, in 1986–1987, then
Cesena, in 1987. He coached Cesena until 1989, when he left to coach
Napoli, then led by
Diego Maradona. He immediately won a Serie A championship, the second in Napoli's history. He then won the
Italian Super Cup the same year. He left the club in 1991, after a poor eighth place followed by Maradona's forced farewell to Napoli. He then coached minor clubs such as
Lecce (
Serie B),
Udinese (Serie A, saved from relegation after playoffs) and
Ascoli (Serie B). In 1996, he was appointed coach of
Swiss team
FC Sion, which he led to win
Swiss Super League for its second time in history. Bigon then tried an unsuccessful return to Serie A with
Perugia. In November 1999 he was appointed coach of
Greek club
Olympiacos, but was dismissed on 10 April 2000 despite the first place in the championship table. After seven years without a job, Bigon made a comeback to football in February 2007, when he was appointed coach of FC Sion, a team he already managed years before. In August 2008, he became head coach of Slovenian football team
Interblock Ljubljana. However, this experience lasted only a very short time, as Bigon left the club in September 2008 by mutual consent with the club due to personal health issues. ==Honours==