Davos, Switzerland – Petter Northug served notice to the World Cup field Saturday in Davos, Switzerland that the Norwegian superstar has to be taken seriously – no matter where or what the World Cup race is. The odds were supposed to be against Northug Saturday. The 30 k freestyle distance individual start doesn’t suit his strong mass-start finishing style. The strong distance field taking to the start line was rounding into shape, especially home-town favorite...