With over 90% of all humans on the planet being right-handed, one would assume that the list of all-time tennis greats would be dominated by those who swing their rackets from the right. Surprisingly, that's not the case. Despite being in a definite minority, southpaws can boast of a slew of great tennis players from both the men's and women's side of the game. Here are the top five left-handed tennis players of all-time:

Rafael Nadal

The only active player to make the list, Nadal has won six Grand Slam titles to date despite playing in the same era as Roger Federer, who some consider to be the greatest tennis player of all time. Nadal is perhaps most famous for his success on clay courts, with over 160 victories on the surface since 2005.

John McEnroe

McEnroe was one of the most successful players of the 1970s, with seven Grand Slam titles to his name. While he may have possessed the best lefty backhand in the history of tennis, McEnroe is perhaps best remembered for his temper and the many heated arguments he had with line judges on the court. In addition to being a great left-handed player he is also known as The Bad Boy of Tennis.

Jimmy Connors

Jimmy Connors was fortunate enough to make 15 Grand Slam title matches and win eight of them. A contemporary of another left-handed tennis great, John McEnroe, the two had many famous championship matches against each other during their careers. The calm professionalism of Connors proved to be the perfect foil for the hot-headed McEnroe and made for an engaging spectacle.

Martina Navratilova

The only woman to make the top five, Navratilova is widely regarded as the greatest female player of all time. Her accomplishments in the game of tennis are staggering: 18 Grand Slam singles titles, 31 Grand Slam women's doubles titles, and 10 Grand Slam mixed doubles titles.

Rod Laver

When most modern tennis fans discuss the greatest players ever, the conversation is usually dominated by recent names (and right-handers) such as Pete Sampras and Roger Federer. While these players certainly belong in the discussion, the accomplishments of Rod Laver are often overlooked because of the era in which he played. The Australian Laver won 11 Grand Slam titles in the 1960s and 1970s and was one of the best amateur tennis players in the world for years prior to that. He is one of only five players to win Grand Slam tournaments on each of the three surfaces of grass, clay, and hardcourt.