It is no secret that John Isner’s serve is one of the biggest weapons in all of tennis. When the now top-ranked American man has success on the court, it is usually led by one of the biggest ...

NEW YORK (AP) John Isner served 17 aces Sunday night ... when Andy Roddick won at Flushing Meadows. Isner's serve topped out at 139 mph and he brought his ace total to 51 for the tournament ...

John Isner had a really great career for a player ... John not only relied on his impressive serve - perhaps the best ever - ...

WIMBLEDON, England (AP)—When John Isner ... there,” Isner said, “even though that’s exactly what we both were.” The match lasted so long because neither player could break serve.

John Isner and Gael Monfils met for the first time 14 years ago, in Washington, D.C. Both talented youngsters possessed two very extreme and very different weapons: Isner had his serve ...

AUCKLAND, New Zealand (AP) — French qualifier Gregoire Berrere weathered storms on and off the court to beat two-time champion John Isner ... American's powerful serves. Isner had 28 aces ...

Novak Djokovic recently addressed the technical details of his serve. The Serb expressed satisfaction over the fact that his serve might not be the fastest but is reliable in terms of accuracy.