The Croatian is flourishing with fatherhood, dancing with fans, and is relishing the latter stages of his astounding career.
The rejuvenated 33-year-old has motored into his maiden Roland-Garros semi-final, becoming just the fifth active player to reach the last-four stage at all four Grand Slams.
On Friday, Cilic will go toe-to-toe with world No.8 Casper Ruud on Court Philippe-Chatrier. Could he complete the set of major finals?
“Absolutely fantastic achievement for me. To be mentioned among them,” said Cilic, referring to the ‘Big Three’ following his steely 5-7, 6-3, 6-4, 3-6, 7-6(10/2) triumph over Andrey Rublev.
“I would say since 2017, I started to feel great on clay and had some great success. But in the end it's also such a short season for clay, it's difficult to time everything every single season.
“I'm feeling great on the court, enjoying myself, being me, playing my own game. It's paying off, and just enjoying the run. Just extremely proud and really happy.”