AIX-EN-PROVENCE, France -- Tony Martin of Germany claimed the overall leader's yellow jersey after winning Friday's sixth stage of Paris-Nice, a 16-mile time trial from Rognes to Aix-en-Provence.
According to provisional results, the 25-year-old HTC-Highroad rider won in 33 minutes, 24 seconds at an average speed of 30 mph.
Bradley Wiggins of Britain finished second, 20 seconds behind the German time trial champion. Richie Porte of Australia took third place, 29 seconds back.
Martin now leads former leader Andreas Kloeden of Germany by 36 seconds in the overall standings.
A former track specialist, Martin often has been compared to former Tour de France champion Jan Ullrich for his powerful style and is widely considered a potential Tour de France winner.