Premise: The Grand Prix Super Series of men 's tennis tournaments , formed part of the Grand Prix and World Championship Tennis tours between 1970 and 1989 , and were held annually throughout the year in Europe , North America , Africa and Asia . John Patrick McEnroe Jr. ( born February 16 , 1959 ) is an American former World No. 1 professional tennis player , often rated among the greatest players of all time in the sport , especially for his touch on the volley . He won seven Grand Slam singles titles ( three at Wimbledon and four at the US Open ) , nine Grand Slam men 's doubles titles , and one Grand Slam mixed doubles title . He also won a record eight year-end championships , 19 Grand Prix Super Series titles , and finished his career with 77 ATP-listed singles titles and 78 in doubles .
Hypothesis: John McEnroe was a sports player.
Label: ENTAILMENT