Live coverage starts Saturday on ESPN, ESPN2 and Tennis Channel.
“I was very close to not coming,” world No. 1 says of playing US Open.
Brothers Ryan Harrison and Christian Harrison were awarded US Open doubles wild cards.
Three-time US Open champion will play singles and doubles in New York.
Serena Williams spent nearly a year working with Wilson LABS on new stick.
Practice isn't confined to the Arthur Ashe Stadium court.
The Spanish star hopes to make a full recovery before the Open, but time is running out.
