In sport, there’s the win and then there’s the story behind the win. In the sport of nordic skiing, some of these stories seem all too familiar, such as Sunday’s Norwegian victory in the men’s 15-kilometer classic pursuit. But even among the Norwegians in the sport of cross-country skiing, there are idiosyncrasies to the success. In the case of Didrik Tønseth, the Norwegian winner of Sunday’s 15 k pursuit in Lillehammer, Norway, the victory was...