"It would be absurd if he couldn't play Indian Wells or Miami or any other tournament in the U.S. especially the US Open," John McEnroe said of Novak Djokovic.
Pink, Gavin Rossdale, Lance Bass are among celebrities set to play Desert Smash.
The Scot is confident after putting in the hard yards and surviving three epic battles in Australia in January.
A breakout success in Melbourne has left the 24-year-old hungry for the biggest challenges.
The American leads a pack of 11 Top-50 players from Team USA.
The German is hoping to steadily improve as the season progresses.
The 20-year-old American is provisionally suspended for a doping violation.
