Originally Posted by Cheetah
it doesn't seem to be moving farther away in oscar's video. it seems to move your arm and elbow into your body cramping you like in the picture of his student i posted which is what you'd expect from pulling back. This is why coaches preach extension and follow through. Nobody says to 'pull back'.
i don't think nadal is too concerned with pulling back here
It's impossible to see that from the back perspective you were looking at. Let's look earlier in the video where we can see Oscar himself showing how to properly execute what he's teaching.
Red represents his extension just after hitting the ball. Yellow represents his maximum extension. The green line is drawn straight down from the tip of his racket.
As you can see, the racket tip still extends forward even while pulling back and to the left.