John McEnroe says Wawrinka has best backhand in game. Agree?

Lacoste has partnered with Yahoo! Sports to provide exclusive content on the 2010 U.S. Open.

No less an authority than John McEnroe has said that the one-handed backhand of Stanislas Wawrinka is the best in the game. McEnroe goes so far as to say that Wawrinka's backhand is one of the most powerful he's ever seen.

We asked Wawrinka to show us the secret to his lethal weapon:

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