An ice hockey referee was forced to leave the rink in a match at the Winter Olympics with blood streaming from her face after being accidentally whacked by a stick.
Cianna Lieffers was one of the officials in charge of the match between Team USA and Canada – two global powerhouses of the game with a rivalry stretching back more than 20 years.
With that in mind she might have expected to have to deal with some needle between the two great rivals.