John McEnroe and Mary Carillo lived in Douglaston as children and were friends with each other .
As an 18-year-old amateur in 1977 , McEnroe won the mixed doubles at the French Open with Mary Carillo , a childhood friend from Douglaston , and then made it through the qualifying tournament and into the main draw at Wimbledon , where he lost in the semifinals to Jimmy Connors in four sets .
John McEnroe