Russian biathletes Irina Starykh and Ekaterina Iourieva tested positive for the banned substance EPO.
Shani Davis went some way to putting his Olympic disappointment behind him as he won his first race since Sochi 2014.
Daniel Richardsson upset home favourite and World Cup leader Martin Johnsrud Sundby to claim victory in the 50km mass start.
Ukraine's Premier League will kick off again on March 15 despite the political turmoil in the country.
Alex Fiva picked up where he left off after claiming victory in the first ski cross World Cup race after the Winter Olympics.
Ukraine's Paralympic chief said they would quit the Winter Paralympic Games if Russia invaded.
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