View Single Post
Old 08-23-2012, 05:55 PM   #58
Hall Of Fame
Join Date: Sep 2010
Posts: 1,993

I analyzed Federer inside out hard FH on the APAS System

There are data about his arm speed and acceleration around the wrist during forward swing.

The picture demonstrates that Federer is able to increase acceleration/force of the arm from frame #1 to #9. The magnitude of the force declined after frame #9. Around impact, frame #24, acceleration decreased more than 70%.

So, he is not able to accelerate the arm significantly near impact. But, this is very hard FH and without doubt he is trying to produce maximum acceleration/force.

Question: What is wrong with Federer?
The answer will be tomorrow.
Anatoly Antipin - one of the most delicate tennis players in the world.
toly is offline   Reply With Quote