Referees need to keep their eyes open at all times.  It’s important that they’re aware of where the puck is – along with all twelve players on the ice – at all times.

Sometimes, their attention lapses.  Especially when there’s an unexpected rug.

ACC Refrer

(stick-tap to reddit hockey for the GIF)

You have to think that the referee felt just a little bit bit better when the linesman headed the other way also took a spill.