Thus, he followed up big sister Kerttu Niskanen's silver from yesterday, when she was only 0.4 seconds behind Therese Johaug.
William Poromaa broke a pole in the latter part of the race and lost quite a few seconds.
At 10.5 km, for example, he was 20 seconds ahead of Jens Burman.
At 13.8 km, instead, Burman was six seconds ahead of Poromaa, something that grew to 16 seconds in the finish.