British Davis Cup captain Leon Smith is tipping Andy Murray to recover from his hip problem and win more Grand Slams.
Smith believes his former protege can return to winning major titles, Olympic gold medals and world number one spot.
"He's one of the best players in the world and he's only 30 years old. He's got great years ahead of him," said Smith, who coached a teenage Murray.
"A fit and healthy Andy Murray is absolutely terrific, and unbelievably tough to beat. A champion."
Murray announced on Saturday that his ongoing hip problem would prevent him from competing in the US Open, a tournament he won in 2012 before two Wimbledon titles.