One man has won all five 10 k Sprint competitions so far this season, so even with 112 starters in today’s BMW IBU World Championship Sprint, there was no doubt about the favorite. Johannes Thignes Boe of Norway has been untouchable on skis since November, regularly out-skiing his nearest competitor by over 30 seconds. The 150m penalty loop in biathlon usually takes athletes about 23 seconds, so Boe can afford to miss once and still...