Bjørgen may not be that dominant in sprints anymore, but in the four years since Sochi, Kikkan has had three podiums, all in sprints, one in Lahti 2015, another in Lahti at the Worlds last year, and one in Davos 2017. She's not podiumed a Team Sprint since that win with Diggins 5 years ago, and she's not podiumed any team race since December 2013. I know she took time out to have a baby in that break but realistically, she's 35 years old and hasn't been especially 'good' in much at all since Sochi, and was very fortunate to get that medal in Lahti too. Definitely she was above the performance level she's shown here or pretty much anywhere for most of the last few seasons, but opinions may vary on how inherently suspicious that is or isn't especially bearing in mind some of those who peaked early in the Games - given the skiathlon I'd anticipate Kalla is one of those - may be tiring now. The American XC girls do have a habit of hitting the right form at the right time, even if they do sometimes require a good dollop of fortune too - remember Caitlin Gregg? - as was the case with Kikkan's sprint medal last season when she'd been thoroughly anonymous all season; today however there was nothing fortunate about the win.