LE HAVRE, France — The Czech rider Zdenek Stybar won the sixth stage of the Tour de France on Thursday, while the defending champion, Vincenzo Nibali of Italy, was caught in yet another crash near the finish caused by the race leader, Tony Martin.
Martin ended up with a broken collarbone after he lost control of his bike with about 1,000 yards to go. It swerved to the right, clipped another bike and then brought down some eight other riders, including Nibali and the Colombian climbing ace Nairo Quintana.
“I can’t even remember what happened,” Martin said.