recorded in several phone conversations with Eddy Mazzoleni in which he allegedly talked about doping products, the investigation led to Di Luca's non-participation in the 2004 Tour de France." 2005 In 2005, Di Luca switched to , with Mario Cipollini, Dario Cioni, Stefano Garzelli and Magnus Bäckstedt. He led the team for the spring classics. His first victory came in the first stage of the UCI ProTour race Vuelta al País Vasco, which he won overall after defeating Aitor Osa in the final time trial. He won the Amstel Gold Race and La Flèche Wallonne, taking the ProTour leader's white jersey. Di Luca was seen as suited to races lasting only a few days. His success in the 2005 Giro d'Italia came as a surprise. Here he won two stages and finished fourth. He finished fifth in the Tour de Pologne. With a fourth in the 2005 Züri-Metzgete, he became 2005 UCI ProTour champion. 2006 Di Luca was forced to retire from the 2006 Tour de France, due to a urinary infection. He recovered to compete in the 2006 Vuelta a España, winning the fifth stage and holding the lead (ceding it to Janez Brajkovič). Di Luca's performances in the classics, the Giro, and other races, were a letdown from the triumphs of 2005. 2007 Di Luca won Milano–Torino in March and Liège–Bastogne–Liège in April. He took stages 4 and 12 en route to the victory in the 2007 Giro d'Italia. After the Giro, it was revealed that Di Luca had unspecified low hormone levels. Italian authorities are determining if they are a consequence of racing at a high level for three weeks or some kind of masking agent. On 28 September, Di Luca withdrew from the UCI road championship calling his treatment "a scandal" after doping allegations. Di Luca was leading the 2007 UCI ProTour when he was suspended before the final race, the Giro di Lombardia, due to alleged involvement in the Oil for Drugs case, for which he was suspended for three months through the close season. 2008–2009 In 2008, Di Luca had a quiet year as his new team, , were not invited to many races. In 2009, they received a wildcard entry to the Giro d'Italia and Di Luca won the fourth stage. He then came second on the fifth stage, gaining the pink jersey as race leader, and extended his lead by winning the