CHAMBERY, France | The Tour de France threw the kitchen sink at Chris Froome: steep mountain ascents followed by daredevil descents at speeds exceeding 70 kilometers (45 miles) per hour that wiped out other riders, the loss of his top teammate in a crash, a breakdown on his bike, and rivals who tried to make him crack with bursts of acceleration. But the most grueling, drama-filled day so far of this 104th Tour finished, yet again, with Froome still wearing the race leader’s yellow jersey.

