"He's been in the game a lot longer and his technique should be superior, " said the Bedford fighter.

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The game here is something called loss harvesting, a technique I have advocated for decades.

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While Harrington may not necessarily be ready to unleash the eye-catching swing when he goes in search of his third consecutive British Open Championship title at Turnberry, Scotland next month, the technique may still have a place in the game.

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"When you look at groundstrokes and all parts of the game, there is not a weakness in Novak Djokovic's technique, movement and recovery, " added Bollettieri, referring to Serbia's 2012 Australian Open champion -- who Federer beat in Friday's semifinals.

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They suggested the technique could be used to show the pieces' location and a suggested move during a game.

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