Tennis: Some Steel

Sport may be mostly a matter of muscle, but a little science sometimes goes a long way. A 17-ft. pole vault is common enough today, but was utterly inconceivable before the invention of the fiber-glass jumping pole. The latest sport to feel the impact of technology is tennis, in which almost any change is a change for the better.

Most of the contestants in last week's U.S. National Championships were equipped with standard rackets made of laminated wood. But a trio of U.S. players came armed with new "T2000" steel rackets,* designed by France's Rene ("The Crocodile") Lacoste, and marketed...

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