Novak Djokovic is widely regarded as one of the greatest tennis players of all time. He has won a record 24 Grand Slam singles titles, tying with Margaret Court.

And Murray is confident more major silverware will follow for Novak Djokovic, who he thinks can establish himself as the best athlete of all time

MELBOURNE, Australia — Novak Djokovic and Andy Murray have known each other for a quarter of a century. They played from the age of 12, meeting 36 times as professionals, including 10 Grand Slam matches. Yet they've never been able to talk shop and freely trade all sorts of thoughts — about tennis and otherwise — until now.