Alberto Contador (SaxoBank-Sungard) is the defending champion and comes to the Tour de France looking to be the first rider to complete a Giro-Tour double since Marco Pantani in 1998.
The Spaniard however returns to the Tour hounded by the allegations of last years positive test to Clenbuterol. During the rider presentation, the Spaniard was booed by the crowd in attendance when his name was called out, and has hardly enjoyed an ideal start to the race.
Caught up in a crash on stage one, followed by an average result in the team time trial, chinks appear to be opening up in the almost untouchable Contador's armour.
That said - write him off at your own peril! The Spaniard may be hurting but there will be plenty of opportunity to turn things around as the race hits the Pyrenees in the coming days.