spain's alberto contador won the 2008 giro d'italia en route to completing the rare giro-vuelta double for the season. the 2009 race celebrated the hundredth year since the first edition of the giro d'italia and was won by the russian denis menchov. the following year saw ivan basso win his second overall race. contador originally won the 2011 giro d'italia, but after a positive drug test result was found, his victory was stripped and given to michele scarponi. vincenzo nibali, the winner of the 2013 race, led the event from the race's eighth stage and on.