Normally cool, calm and collected the Swiss player erupts in his semi-final.
If you’re having a bad day just watch this video of Stanislas Wawrinka in his US Open semi-final against Novak Djokovic.
Not only did the Swiss star lose to the world number one but his racquet felt the full force of his frustration as he belted it into the court at Flushing Meadows.
And then just for good measure to make sure there was no way he could use it for the rest of the match he put his knee through it.
fanatix thinks somebody might need to go have a time-out.