Three names sell tennis rackets: Rafa, Roger and Roddick. Walk around the U.S. Open this year and you’ll notice the topspin-wielding heartthrob and world No. 1 Rafael Nadal playing with one of the ...

"The 4:30 wakeup to start stringing tennis rackets is not the most pleasurable thing in the world," Yu said. The rackets Yu strings will be used in about six or seven hours, when the strings start to ...