Resurgence of the underhand serve as a surprise move?
Berdych did it here.... https://www.youtube.com/watch?v=0euUZVL70H0
Gulbis: https://www.youtube.com/watch?v=fbBnHc6dpxI
Chang did it against Lendl... https://www.youtube.com/watch?v=7aJfUVebXJY
Even Karlovic: https://www.youtube.com/watch?v=L3JsfD22wHQ
and here is an article on it:
https://uk.eurosport.yahoo.com/blogs...110800005.html
Berdych did it here.... https://www.youtube.com/watch?v=0euUZVL70H0
Gulbis: https://www.youtube.com/watch?v=fbBnHc6dpxI
Chang did it against Lendl... https://www.youtube.com/watch?v=7aJfUVebXJY
Even Karlovic: https://www.youtube.com/watch?v=L3JsfD22wHQ
and here is an article on it:
https://uk.eurosport.yahoo.com/blogs...110800005.html
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