"Well, when you're only 210 pounds, you can't really do it like guys like me do," Williams joked during a chat with reporters. "Thumbs up to Mark. It's tough for him. He's a little dude. It works. It definitely worked from last year.
"As long as he focuses on the little things that he needs to do, as far as cleaning up stuff that he knows that he needs to work on, it's fine with me," he went on. "He can do whatever he wants. He can do back flips if he wants."