Is Johannes Høsflot Klæbo better than Petter Northug* was at his age? It’s hard to say, reigning Norwegian World Cup winner Martin Johnsrud Sundby told NRK. But his performance in the last two days is pretty unheard of, Sundby said after Saturday’s 15-kilometer classic. On both Friday and Saturday at the Ruka World Cup opener in Kuusamo, Finland, Klæbo (who’s still a U23 athlete at just 21 years old, although he’s on Norway’s exclusive World...