Two-time Olympic champion Iivo Niskanen secured his sixth World Cup win with a home victory in the men’s cross-country race over 15 kilometres in Ruka, Finland, on Saturday. He beat Russian duo of Alexey Chervotkin and defending champion Alexander Bolshunov. Norwegian superstar Johannes Hoesflot Klaebo was far down in the final standings, coming ninth. Nordic combined reigning World Cup champion Jarl-Magnus Riiber has been disqualified from Saturday’s event in Ruka due to a an irregular suit. Ruling body FIS said in the qualification round report that Riiber and Norwegian compatriot Kasper Moe…