I don't know why roger is not making the damn adjustments.
that serve was 136 mph to his backhand and he was on top of it. you don't go over that ball when you have had no luck with it at all match long.
you slice that ball low and at least give wawrinka a chance to hit another ball.
and then he did the same thing with the next serve. he tried going over the ball. translation: 2 very easy points for wawrinka.
I don't get this at all. roger has one of the best sliced returns ever so why not just get the ball back and try to get into a point.