World No. 24 extends five-year partnership with racquet brand.
The fabled old court and its stunning viewpoints will be back for one more year at the U.S. Open.
The three players will have a hearing in late September.
Spaniard nets first ever ATP title in third final this season.
"Everything takes a lot of energy," Roland Garros champion says of New York experience.
McEnroe doesn't seem to know if the pair will ever work together.
The men's singles draw for the 2016 U.S. Open revealed some interesting matchups.