TOBLACH, Italy – With consecutive Tour de Ski stage victories, Marit Bjoergen (NOR) is pounding on Justyna Kowalczyk’s (POL)_door, looking to serve an eviction notice for the top of the Tour podium. Kowalczyk still holds the overall lead in her quest for a third Tour de Ski title, but with a win today in the 3-kilometer classic prologue, Bjoergen not only crept closer, but also showed a form that has been missing since illness took...