Goran Ivanisevic says Novak Djokovic could decide to target Steffi Graf's 372 weeks at world number one, but it will depend on his health.
No man has spent more time on top of the world rankings than Djokovic, with him surpassing Roger Federer's previous record of 310 weeks earlier this month.
Djokovic himself has said that he is likely to reduce his schedule now he has the record to focus on the Grand Slams instead, although coach Ivanisevic thinks it's certainly possible that Graf's general tennis record falls in a year or so.
“If he’s healthy, if his mind is clear like he was in Australia and he knows what he wants to do, the sky is the limit," Ivanisevic told The Functional Tennis Podcast of Djokovic.
"Like I said before: Steffi Graf, 372, you know… anything is possible. Most important is if he’s healthy then we’ll see what’s going to happen.”
The man best positioned to take Djokovic's world number one spot right now is Daniil Medvedev, and he has recently said he thinks the Serbian is capable of smashing Graf's record.
“First of all, it’s an unbelievable achievement,” he said.
“The way he’s played, he’s definitely capable of catching 400 weeks. We’re going to try to not let him do this.
“I didn’t manage to do anything in the Australian Open final, but that is what sport is about.
For more exclusive content from Tennisbuzz, including news, features, trivia, promotions and more, please be sure to sign up for our newsletter below or via our home page.
Why not test your tennis knowledge by tackling one of our fiendish quizzes too?