Novak Djokovic is an athlete.
The ATP World Tour Masters 1000 ( previously known as the ATP Championship Series , Single-Week , ATP Super 9 , Tennis Masters Series , and ATP Masters Series ) is the third highest tier of men 's tennis tournament after the four Grand Slam tournaments and ATP World Tour Finals . 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 . Novak Djokovic . In 2016 , he became the eighth player in history to achieve the Career Grand Slam ; by winning the 2016 French Open , Djokovic became the third man to hold all four major titles at once , the first since Rod Laver in 1969 , and the first ever to do so on three different surfaces .