Cape Town - WTA greats Chris Evert and Lindsay Davenport are in agreement that Novak Djokovic - not Rafael Nadal or Roger Federer - is the best tennis player the world has ever seen.
Djokovic has won the last three Grand Slams in a row, leaving him the French Open away from holding all four major titles at once for the second time in his career.
It's something that is not going unnoticed as the debate over who is the greatest of all time continues to rage.
"Djokovic was inhuman during the Australian Open," Evert explained to the Tennis Channel.
"I've never seen anybody with that much mental focus, that much clarity and that much determination.
"Even better than Rafael Nadal, who is also 100 percent great in those categories.
"If he has another great two or three years, I think he can pass them all (grand slam titles won).
"I'm a big Roger Federer fan, but I'm not as optimistic about Roger winning another Grand Slam, unless it is Wimbledon.
"The points are shorter, power plays a big role and serving plays a big role."
Davenport agreed, adding: "The other two (Federer and Nadal) has never hold all four (grand slams) at the same time. Novak is one slam away from doing it twice.
"It's just unheard of that we have a player that are that good within the same era."