Ross Tucker, a 32-year-old physiologist, reflected in his TV during a Tour broadcast. Tucker said uncomfortable questions were what the sport needed to clean up its image.
GAP, France — As riders in the Tour de France churn their way up the towering Alpe d’Huez on Thursday, not once but twice, Ross Tucker will be watching on television in South Africa 5,500 miles away, laptop and stop watch at the ready, looking for clues to the Tour’s perennial question: Are any of the riders doping?