However, Peter Carter suffered a fatal vehicle crash while he was on his honeymoon, and could never witness Federer touch the zenith of the sport.
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.
When asked what he thought Carter would think about him now owning 20 grand slam titles, Federer couldn't contain his emotions. "I was able to, you know, have coaching lessons with him".
"I love the Botanical Gardens and I love nature and I love to spend time daily there if I can", Djokovic said at a sponsor's event in Melbourne on Wednesday. It was somewhat of a wake-up call for me when he passed away.
According to CNN, he later said: "Geez, never broke down like this".
"When it first happened, I believe it was in the Davis Cup in Basel when I played an incredible weekend against the Americans (in 2001) and of course when I won Wimbledon, the emotions were so, so strong". "The right coaches at the right time".
Federer "left his hotel and ran through the streets, bawling and hysterical", the Australian newspaper reported.
'He didn't want me to be a wasted talent.
Federer says thank you in other ways, too.
Rosenstein expected to leave Justice in weeks
ABC News also reported that there is no indication that Trump is attempting to force out Rosenstein, despite their rocky past. If confirmed, Barr would then oversee the special counsel's Russian Federation investigation.
Seeking to win a third consecutive Australian Open title, Federer told CNN he felt confident of going far in the tournament in 2019.
Like Federer, Djokovic has seen huge success at the Australian Open throughout his career. "Sure, I make those decisions but I've been lucky along the way".
They used to call each other and say "I have this really special kid I'm training", he said.
"In terms of who is going to win it, we know who the usual suspects are and I am part of that bunch".
"That really meant a lot to me".
"The second half was maybe not as good but still it was solid, so I think the most important thing for me moving into this year is being ready in the mind when the big moments come around".
The world number two also endured a disappointing Australian Open exit a year ago, forced to retire in pain from his quarter-final with Marin Cilic.
Federer expressed his love for the Australian tennis calendar, as there is much that connects him to the country.
Already eliminated in singles, Stauffer noted that Federer wore a black armband when he played and lost in the doubles in Toronto alongside Wayne Ferreira - a South African - against Australian duo Joshua Eagle and Sandon Stolle. "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".