With a record 8 Wimbledon titles, Federer is considered to be one of the all time tennis greats.
Rafael Nadal is the King of Clay, winning 14 French Open titles to push his total Grand Slam haul to a record of 22.
Novak Djokovic is the current world number one and holder of 21 Grand Slam titles, and a record 9 Australian Opens.
With 7 Wimbledons and 5 US Opens, Sampras is considered to be one of the greatest fast court players of all time with the best serve.
Roy Emerson was another great Australian player who dominated in the 1960s when many other players such as Rod Laver turned professional.
Rod Laver is one of the greatest tennis players in history, and the only man to win the the Grand Slam twice, in 1962 and 1969.
Bjorn Borg won five consecutive Wimbledon titles and six French Open titles.