Swiss sensation Marco Odermatt lived up to his top billing to get Olympic giant slalom gold on Sunday as he withstood adverse weather and a serious challenge from Slovenia’s Zan Kranjec – after taking a nap between runs. Odermatt, 24, is a six-time junior world champion, the overall World Cup leader and had won four of the six season races in the discipline. But he needed to regroup after crashing out of the super-g earlier this week as top contender, and did so in style in a race in heavy snowfall which also forced the delay of the second run by 80 minutes. Odermatt held on to his first-run l…