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Tennis's highest recorded speed is around 345 kilometers per hour. This high speed allows players to move away from the net and make a sudden move, giving them an advantage in crucial moments of the game.
In 2011, Kiki Cooper broke the record for fastest tennis serve by hitting it at 251 kilometers per hour during their match against Germany in the Davis Cup.
Yours faithfully,
Sports Biographer
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需要注意的是，我进行了适当的修改以保持句子流畅，同时保持原稿中的信息，没有显著的变化，但删除了一些不相关的部分。
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