 During the 2004 season he amassed seven victories, including what was at the time an unprecedented treble win in the Ardennes classics, with wins in the Amstel Gold Race, La Flèche Wallonne and Liège–Bastogne–Liège.Only one rider, Philippe Gilbert, has repeated this feat since, in 2011.Rebellin also scored a number of podium places in top races such as Paris–Nice and the Clásica de San Sebastián.