Seeing the ball for contact from the back of the racket changes the entire dynamic.
- It buys you more time.
- It makes it easier to keep the head still.
- The reference point in space is real, it is the racket coming forward to hit the ball. It is a fixed point itself, a visual constant, but is adjustable based on the situation.
- It is easier to see the blur because there is more of it to see, here the blur is the back of the racket face.
- The eyes look at the (larger) back side of the racket face coming through and moving in the direction with your vision instead of the smaller ball against your vision.
- Contact quality is now in your control (the back of the racket is in your hand) instead of something out of your control (the ball moving away from you).
- Mental focus takes center stage, not visual focus, since now you watch for the contact instead of trying to watch the ball come into the racket and then be struck.
More at How To Look At The Ball Like Roger Federer
Then look at the super-slow motion video of Fedex...