In the final of the first monument of the year, Milan–San Remo, he was the strongest rider during the descent of the Poggio, but was outsprinted for victory by Simon Gerrans. He was in great form for the Belgian spring classics, but a fall and material malfunction kept him from playing a part in the final of both the E3 Harelbeke and Gent–Wevelgem. Cancellara was one of the favourites to win the renewed Tour of Flanders but played no part in the final due to a crash in the feed zone. It was caused by a discarded water bottle. He suffered a four-part fracture of the right collarbone which ruined his spring campaign. He came back to competition on 10 June in his homeland, racing in the Tour de Suisse. Cancellara stated that he was nervous before the start of the prologue, which he finished in second position, four seconds behind the winner, 's Peter Sagan. In the Tour de France, Cancellara won the opening-day prologue in Liège; his fifth such victory in the Tour. After his fifth day in the yellow jersey in the race, Cancellara broke René Vietto's longstanding record as the rider with the most career yellow jerseys who has not won the Tour overall. He subsequently lost the jersey to Wiggins of after conceding almost two minutes on the seventh stage, which finished on top of a steep Category 1 climb leading to Planche des Belles Filles. He withdrew from the Tour after the eleventh stage to return home to support his wife before the birth of their second child. Cancellara returned to compete in the road race at the Olympic Games. He was the leading rider of a massive breakaway when he badly negotiated a right turn with about to cover and fell heavily on his right shoulder. He completed the race, finishing approximately five minutes after the winner, the Kazakh Alexander Vinokourov, but was in obvious pain and could not hold his handlebar properly with his right hand. As he crossed the line, he was in tears and was sent to the hospital where it was revealed that he did not suffer any fractures. Two days after the incident, it was announced that he would be able to defend his Olympic Time Trial title, an event he subsequently finished in seventh. In August, Cancellara announced that he was putting an end to his 2012