Just came across this article. Murray's old coach, Miles Maclagan actually predicted right after the USO win that Murray might go into a slump rather than go on a winning spree. I guess Miles obviously knows him all too well!
Andy Murray's former coach Miles Maclagan predicts "lull"
"I have to apologise because I clearly pushed Roger so hard on Thursday!" (Andy Murray on why Federer couldn't play the WTF final).