“I think for her it's enough [for her confidence] that she won Rome,” he said, adding that because serving is increasingly important in the women’s game, being caught cold is always a fear.
“When the women are serving as good as they are now, you can be down 6-3, 2-0 and a break down in 45 minutes and you haven't put a foot wrong,” he said. “That didn't happen with Steffi Graf or Chrissie Evert, they never had to worry about that kind of stuff. But today you do, as a woman, so there's some luck involved.
“I haven't seen enough of her hating to lose, meaning if she comes out and plays a [bad] match, and she doesn't ball strike well, I haven't seen enough of her being able to sort of say: ‘OK, you know what, I'm not frickin' losing this match.' So that could be an [issue]. But that comes with age, I think.”