But a year before Federer won his first grand slam at Wimbeldon in 2003, Carter died in a vehicle accident while on his honeymoon in South Africa.
But as Federer himself put it, he has rarely if ever "broke down" in an interview the way he did when talking to CNN's Christina Macfarlane from his training base in Dubai last month. I have played so much tennis throughout my life having faced hard moments and injuries and travelling was really an incredible life school so I hope it's gonna help me a lot to participate, to stay calm, to be good under pressure.
Speaking at the Hopman Cup in Perth this week, Federer - who said he had been asked for his opinion on the change by tournament officials - admitted marathon final sets would be missed by some. It was somewhat of a wake-up call for me when he passed away. "At the same I think it's also important to go [in] confident in the event and know you can beat them all from the get-go".
He later added: "Geez, never broken down like this". "The right coaches at the right time".
The Australian newspaper reported he left his hotel and "ran through the streets, bawling and hysterical".
"I guess he didn't want me to be a wasted talent. So".
"The amusing thing is we have four different formats in four Slams, so it is important to remind yourself what's going on and which one it is", said Federer.
Federer hasn't lost a match at the Aussie Open since his 2016 semi-final defeat to Djokovic and is going for a third successive title and record seventh in all.
"It's a really nice story", Federer said. "The legends that I admire, the coaches that I've had in Tony Roche and Peter Carter - they've been incredibly inspirational and important to me in my life".
That moment sparked a late-career resurgence including back-to-back Australian Open titles. "I made those decisions, but I've been lucky along the way".
The world number two also endured a disappointing Australian Open exit previous year, forced to retire in pain from his quarter-final with Marin Cilic.
"Melbourne will be the same I think".
"I have a friend there, a Brazilian fig tree, that I like to climb and I like to connect with so that's probably my favourite thing to do".
"I do get emotional watching movies sometimes but I did not know I had this happy cry as we call it in our family, not just when you are winning, but the kiddies", the Basel native said.