MORZINE, France — Britain’s Bradley Wiggins tightened his grip on the Dauphine Libere after Colombia’s Nairo Quintana won the sixth and penultimate stage here Saturday. Wiggins went into this mountainous 167.5-kilometer run leading the General Classification by 38sec from Germany’s Tony Martin. But after crossing the line in fourth behind Quintana, Cadel Evans and Daniel Moreno, the Team Sky star extended his lead with a 1min 20sec cushion over his teammate, Australian Michael Rogers. Evans is placed third, at 1min36sec, after coming in second on Saturday, 16sec behind Quintana. — AFP