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Old 01-27-2013, 10:09 AM   #5
Join Date: Feb 2011
Posts: 6,273

To me it seems like fed and nadal are not really using a classic loop. yes they have a little loop but they drop the arm (while extending it) quite slowly and then accelerate on the way up. so they are not really using gravity and the actual swing is relatively short

that is really different from the big gravity loop that gonzales uses
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