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When should you break the rules of percentage doubles?

The Spaniard went to great depths to control Kevin Anderson's serve.

The 17-time Grand Slam champion wants to spread her doubles knowledge.

The texture and stiffness of polyesters also allow the strings to better bite the ball.

The world No. 3 has been on a roll, with wins in Wimbledon and Cincinnati. 

The young American has made huge strides in the past few weeks.

Unlike a car needing an oil change, shoes don't obey odometers.

The 2015 Rogers Cup champion can teach you plenty.

The American took out compatriot Ryan Harrison in the final.

The Australian hits one of the heaviest balls on tour, starting with her first shot.

An ill-timed bee attack caused a lot of problems.

You can learn from the Australian's radical downward swing pattern.

What happens when someone claims a false out call threw them off?

The world No. 1 reveals how he gets warm for matches and practice.