Chris Froome: My biggest Tour de France threats are Porte, Contador, Bardet

Chris Froome has named Richie Porte (BMC Racing), Alberto Contador (Trek-Segafredo) and last year's runner-up Romain Bardet (AG2R La Mondiale) as his main contenders for the Tour de France. Froome did not, however, point to Nairo Quintana (Movistar), saying that the Colombian may suffer from the challenge of doing the Tour and the Giro d'Italia in the same season.