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Being able to predict where the tennis ball is going to cross the net is one of the most important skills a doubles player can develop, because then you'll know when to poach and when to cover the alley.

Good doubles players use "tells" to anticipate where the tennis ball is going so they can get easy put-away volleys and overheads. In this video, Martina Navratilova shares her favorite poaching tell, while Gigi Fernandez shares her favorite tell for when to cover the alley.