Originally Posted by bhupaes
Believe me, it is brutally fast. Because the pros do it at the very last moment, as the ball is nearing the contact point. That's how they get the ungodly RHS.
The acceleration to contact is brutally fast. The flip isn't where the pros focus on racket speed. Maybe I'm being too nitpicky, but I have seen players actively try to flip the racket fast and at the last moment, and the results are, well, brutal.