Colombia's Nairo Quintana gives the thumbs up as he wears the pink jersey of the overall leader at the start of the 18th stage of the Giro d'Italia cycling race, from Belluno to Rifugio Panarotta, Italy, Thursday, May 29, 2014. (AP Photo/Gian Mattia D'Alberto)
Colombia's Nairo Quintana, left, speaks with other Colombian cyclists at the start of the 18th stage of the Giro d'Italia cycling race, from Belluno to Rifugio Panarotta, Italy, Thursday, May 29, 2014. (AP Photo/Gian Mattia D'Alberto)
A race hostess shelter's Colombia's Julian David Arredondo Moreno from the sun at the start of the 18th stage of the Giro d'Italia cycling race, from Belluno to Rifugio Panarotta, Italy, Thursday, May 29, 2014. (AP Photo/Gian Mattia D'Alberto)
Colombia's Julian David Arredondo Moreno is pictured at the start of the 18th stage of the Giro d'Italia cycling race, from Belluno to Rifugio Panarotta, Italy, Thursday, May 29, 2014. (AP Photo/Gian Mattia D'Alberto)