Boris Becker who was former coach of Novak Djokovic has urged tennis fans to "wake up to the greatness" of Novak Djokovic after he won his 16th Grand Slam.
Serbia's Djokovic, 32, won his fifth Wimbledon title by beating Centre Court favourite Roger Federer in a classic match.
Victory in the longest ever Wimbledon singles final moved him closer to Federer's men's record of 20 major triumphs. Rafael Nadal, with 18, separates the pair.
Djokovic struggled to win over a pro-Federer crowd, who clapped some of his misses and jeered him at one point during a tense final set.
"It triggered him to fight in the fifth set," said Becker, who coached Djokovic between 2013 and 2016.
"He got a bit riled and gave some stares to people in the crowd but that's how he works, that's how he ticks.
"There comes a point when you get frustrated, but I thought he handled himself well and was mentally well prepared."
Swiss second seed Federer, 37, was aiming for a record-extending ninth men's singles title at the All England Club, which would have matched Martina Navratilova's all-time leading tally.
Federer is the darling of the Centre Court crowd and was backed by the majority of the 15,000 fans in what became an increasingly partisan atmosphere.
That was most apparent when Djokovic was booed when he went over to chair umpire Damian Steiner to discuss what he felt was a late Hawk-Eye challenge from Federer.
"Federer is the greatest of all-time here and has the right to get that love, but on the other side you have to respect a four-time champion a little bit more," said Becker, a three-time winner at SW19.
"I hope next year, if they played again, it would be more even.
"He came into the party that was the Roger and Rafa party and he became the party pooper.
"Now, after 16 majors, people have got to wake up to the greatness of Novak Djokovic.