Roger Federer is a player of tennis.
The Grand Slam tournaments , also called majors , are the four most-important annual tennis events . Winning the four majors in consecutive tournaments but not in the same year is known as a Non-Calendar Year Grand Slam , while winning all four majors at any point during the course of a career is known as a Career Grand Slam . This article details the list of men 's singles Grand Slam tournaments tennis champions . Roger Federer . He is among the eight men to capture a career Grand Slam .