Federer failed to drop a single set during his Wimbledon 2017 triumph, which culminated in a 6-3, 6-1, 6-4 victory over the Croatian.
Cilic was clearly hindered by major blistering on his left foot but Federer was nevertheless supremely impressive, taking his Grand Slam title count to 19 with an eighth Wimbledon.
And his 28-year-old opponent paid tribute to the Swiss’ longevity and constant willingness to change his game, even at the age of 35.
“I think his ability and his desire to continue to improve is definitely one of the best in the game,” Cilic said.
Marin Cilic was in awe of Roger Federer after another historic win
Roger Federer didn't drop a single set during the entire tournament
I think his ability and his desire to continue to improve is definitely one of the best in the game
Marin Cilic on Roger Federer
“Even at age that he is at now, he's still improving, still challenging himself to get better and better. “All credit to him and his team that they find ways to get him better and to another level.
“Not talking about today's final, he had an unbelievable journey until the final, also winning Halle and getting to the finals without dropping a set, and today also played a great match.
“All positive things. Really a great gentleman, extremely one of the biggest ambassadors of tennis.”
Federer has now won two of the three Grand Slam titles this year after taking a six-month break and joked that he would take more time off if this was the result.
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Marin Cilic breaks down in TEARS during Wimbledon 2017 final Sun, July 16, 2017
Marin Cilic broke down in tears during the Wimbledon final against Roger Federer.
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And Cilic admitted that despite his own injury, Federer’s achievement was to be lauded.
“I didn't have actually time on the court also to congratulate Roger,” Cilic added.
“Don't want to put down his victory in any way. I mean, he deserved it completely. These things are part of the sport.
“Really congratulations to him and his team for everything he did, for another title here.”