"The sport will outlive everyone, and the sport is more important than anybody individually," Grand Slam king said.
Paula Badosa is out of Madrid due to a lingering injury.
The Japanese star advanced in Madrid to crack a milestone.
Grand Slam king names the champion he feels is most undervalued.
Corentin Moutet heard the boos after snapping his racquet and retiring in Madrid.
The Greek says she needed a win like today's, for her confidence.
Two-time US Open champion Andre Agassi will play a different sport's US Open this weekend.
