Roger's patchy play is a bit worrying. Struff was hitting heavy shots, but I felt Roger wasted so many breakpoints, something he can not afford to do if he ends up facing Del Potro in the quarterfinal. His serve mysteriously deserted him midway in the third set, and there were many shanks. I also think he was slicing the ball too much, in the hope that Struff misses. He does that with many tall players, but Struff was gobbling up many of those slices, producing beautiful screamers. Roger will have to step up if he want to reach the semifinal/final.