 At Mapei he was part of a generation of young cyclists that included Fabian Cancellara, Luca Paolini, Dario Cioni, Rinaldo Nocentini, Filippo Pozzato, Leif Hoste, Bernhard Eisel, Allan Davis, and Michael Rogers.Wegelius took part in his first Grand Tour, Mapei's last, at the 2002 Vuelta a España.After the team's sponsor pulled out at the end of 2002, Wegelius moved to the smaller De Nardi team, which raced on the Italian domestic scene.