Smack dab in the heart of the nordic sport world in Lillehammer, Norway, the World Cup began its second weekend of the 2017/2018 season with a kick-and-glide bang on Saturday. The men contested a 1.5-kilometer classic sprint on a course featuring a flat run into and out of a three successive climb-descent combo. At 21 years old, Norway’s Johannes Høsflot Klæbo remains peerless. Is it the lungs? His up-tempo, high-output running style? For all the...