but how can somebody knows that u're using speed glue??
Alois Rosario from PingSkills Posted 12 years ago
The smell and the sound of the bat. At a professional level, there are machines that test the chemicals in the rubber. At tournaments players rackets are tested randomly.
Julio Torres Posted 12 years ago
wow-- thanks..
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Julio Torres Posted 12 years ago
Julio Torres Posted 12 years ago
Alois Rosario from PingSkills Posted 12 years ago
Julio Torres Posted 12 years ago