Raonic's parents are both engineers and apparently he reads and reads when off court. In fact, during the match Fleming and Petch were suggesting he "thinks too much."
So, there probably is something "between the ears."
Was just going to say the same. He's supposed to be pretty bright. And, while I dislike him and his game, I do think he has learned from the drubbing Andy gave him at USO a couple of years ago.