Norway’s Johannes Hösflot Kläbo maintained his sprint supremacy in cross country skiing on Tuesday when he earned a fourth career Olympic gold at the Beijing Games. Kläbo won from the front as he beat former world champion Federico Pellegrino of Italy by three-tenths in the freestyle race under floodlights in Zhangjiakou for the same top two finish as in 2018. Alexander Terentev from the Russian Olympic Committee team, the only non-Norwegian to ever beat Kläbo in a sprint race, early in the World Cup season, took bronze. Kläbo finished a modest 40th in Sunday’s skiathlon but has now won every …