A sports bettor who heckled Olympic champion sprinter Gabby Thomas during a Grand Slam Track event in Philadelphia has been banned by the betting site FanDuel Sportsbook.

Jessie Diggins became the first American to win world championship gold in an individual cross country ski race, finishing 14 seconds in front of Sweden’s Frida Karlsson on Tuesday.

The mountains of Zhangjiakou have seen temperatures lower than the FIS competition limit of -20 degrees Celsius in the run-up to the Games.