I love the tennis game,especially the  grand slam also called majors, 
I like tennis too. What exactly is a grand slam in tennis though?
Grand Slam (tennis)
The Grand Slam tournaments, also called majors, are the four most important annual tennis events. They offer the most ranking points, prize money, public and media attention, the greatest strength and size of field, and greater number of "best of" sets for men, which is 5. The Grand Slam itinerary consists of the Australian Open in mid January, the French Open around late May through early June, Wimbledon in June-July, and the US Open in August-September
due to injury, triumphed over Nadal in 5 sets to win the record-breaking 18th major at the 2017 Australian Open, McEnroe remarked that Federer had cemented his status as being the best tennis player of all time, but also left open the possibility that Nadal can be in the running again should he win additional men's singles majors to narrow the gap.
In October 2013, Rod Laver, the only tennis player to achieve the Grand Slam twice, said "When I look at Federer, with what he's