He get more frustrate when he lost the 1st set , which he should have win it. After that , it all about error, error, error, forehand error, backhand error and any error you can think of. I can see through his eyes , he just wanna give up , he don't want to play anymore. What a lack of sportsmanship from Stan Wawrinka.
I just can't understand why he would miss a cheap point in front of the net? He could just smash the ball but instead he use his back hand again and the ball just fly far away from the court.
So he had difficulty after that with such a weaker opponent? From that picture it looks like he got frustrated and I sure hope he didn't lose that match.
I stopped betting on tennis after Federer lost last month. That killed me to watch that match. He ended up with an injury from that match and has pull himself out of any future tournaments until he further notice so he can reassess if he will continue playing. I think he hurt his knee when he fell in that match at Wimbeldon.