Born in
Clabecq,
Wallonia, Baseggio made an impressive debut for
R.S.C. Anderlecht aged 17, against old rivals
Standard Liège, and scored his first goal in the same game. At the time a hot prospect for the future, he was in direct competition with
Enzo Scifo and
Pär Zetterberg, two players whose talent was already confirmed; eventually he became a first-team regular, and then the
maestro of the team after the departures of the pair in the late 1990s. With the return of Zetterberg in the summer of 2003, Anderlecht coach
Hugo Broos decided that there was no room for both players, and Baseggio found himself with few game opportunities, until the manager was fired in February 2005. After a disappointing end of
season, he also played second-choice for new coach
Franky Vercauteren; the owner of an extremely powerful shot, he scored the 1–1 equalizer in an eventual 2–1 win against
R.A.A. Louviéroise in mid-November 2004, hitting the ball with such power that it burst. In the 2005 summer Baseggio was transfer listed, joining Italy's
Treviso F.B.C. 1993 in January 2006 and being relegated from
Serie A in
his first year. However, in the mid-season interval of the next season, he returned to Anderlecht: in his two stints with the
Brussels club, he won four
leagues, although he was only a fringe player in
the last conquest. After only three matches in the first part of the
2007–08 campaign, Baseggio moved again in January, joining
R.E. Mouscron for an undisclosed fee, with a contract due to expire in June 2010. On 20 May of that year, the 31-year-old signed a three-year deal with
A.F.C. Tubize in the
second division, being a free agent since late in the previous year after the former side had folded due to serious financial problems. He played the remainder of his career in amateur football, representing Patro Lensois and ETSP Brainoise. ==International career==