[4] Rebellin was best known in the cycling world for his 2004 season, when he won a then unprecedented treble with wins in Amstel Gold Race, La Flèche Wallonne and Liège–Bastogne–Liège.

[5] Born in San Bonifacio in the province of Verona, Rebellin turned professional in 1992 and came to the attention of the cycling world with a string of strong performances during his early years.

Riding for Team Polti, Rebellin took stage seven and with it led in the general classification, giving him the pink jersey.

Over the following years he won many Italian classic races, such as the Giro del Veneto and Tre Valli Varesine.

Rebellin also scored a number of podium places in top races such as Paris–Nice and the Clásica de San Sebastián.

Rebellin began the 2007 season leading Paris–Nice until Alberto Contador moved him to second in the final stage to Nice.

[7][8] On 16 August 2011, Rebellin took his first victory after returning from his doping suspension, winning Tre Valli Varesine four seconds ahead of Domenico Pozzovivo.

[9] On 28 April 2015, at 43 years old, Rebellin won the queen stage of the Tour of Turkey, a mountaintop finish concluding in Elmali.

In April 2019 he announced that he had rejoined the Meridiana–Kamen team and that he would retire from competition after the Italian National Road Race Championships at the end of June.

[16] On 8 December 2020, Rebellin announced that he would continue for a record 29th season in professional racing, initially signing with the Cambodia Cycling Academy team for 2021.

[20] According to the Austrian newspaper Der Standard, Rebellin was killed instantly in the incident, which took place at Montebello Vicentino shortly before midday.

However, in 2015 a court in Padova ruled that he had no criminal case to answer, in addition to clearing him of charges of tax evasion.