ICYMI: It's been 18 years since Pat Rafter - a two-time US Open Tennis Championships Winner - became the World No.1 on ATP World Tour.

It was 18 years ago, on July 26, 1999, when Patrick Rafter - a two-time US Open champion, and one of the most popular players in the sport’s history - became the World No.1 on the ATP World Tour.Having won his first major at the 1997 US Open, beating Greg