Roger Federer is a tennis player.
The 2007 Tennis Masters Cup was a men 's tennis tournament played on indoor hard courts . The French Open , often referred to as Roland-Garros ( [ ʁɔlɑ̃ ɡaʁɔs ] ) , is a major tennis tournament held over two weeks between late May and early June at the Stade Roland-Garros in Paris , France . The Grand Slam tournaments , also called majors , are the four most-important annual tennis events . Roger Federer . Federer has won 18 Grand Slam singles titles , the most in history for a male tennis player , and held the No. 1 spot in the ATP rankings for a record 237 consecutive weeks and a record total of 302 weeks . The United States Open Tennis Championships is a hardcourt tennis tournament .