“I tried to be ready for Indian Wells but my ankle wasn’t ready, so I had to wait another few weeks,” Na said. “I really wanted to be 100 percent ready to come back to the court, because otherwise it would be dangerous. I’ve been really looking forward to coming back. I feel like I had another off-season just now.”

Wimbledon runner-up and two-time Indianapolis Tennis Championship presented by Lilly champion Andy Roddick, 26, has announced his withdrawal from this year’s tournament.