The modern U.S. Open tennis player is a master of racquet minutiae. In pursuit of the tiniest advantage, tennis stars tinker with their racquet's weight, balance, string properties and handle size.

DELRAY BEACH, Fla. — You can get everything you want these days with an on-demand subscription: music, movies, food, drinks, clothing. Now you can add freshly strung racquets to the list. Stringbox is ...

Forbes contributors publish independent expert analyses and insights. Tim Newcomb covers tennis gear/business, stadiums and shoe tech. So much is made about the technology of tennis rackets. But don't ...