Good thing Jessie Diggins has perspective. Sure, it doesn’t hurt that she’s only 19, with plenty more international racing in her future, including a trip to the 2011 World Ski Championships later this winter. But still, some athletes would be bitter, disappointed, or downright pissed off to crash out of contention in a big race they had a shot at winning. Not Diggins, who picked herself up after a broken pole in the first kilometer...