Coach Marian Vajda felt this may have been Novak Djokovic's last chance to win a maiden French Open title.
Having first reached the semi-finals nine years ago, Djokovic finally got his hands on the Coupe des Mousquetaires with a 3-6 6-1 6-2 6-4 victory over Andy Murray.
It was his 12th appearance at Roland Garros, more than any other debut winner in history.
Last year Djokovic appeared set to win after finally beating Rafael Nadal only for Stan Wawrinka to play the match of his life and deny him.
Slovakian Vajda first began coaching Djokovic in 2006, and he said: " It means a lot because, after 10 years, it's one of the sweetest and best tournaments for me because this was never reached before .
"Now Novak is 29 and, when you get older, your nerves are not that great. It was maybe the last tournament he can win. Maybe he wins one more or two more now but this year was just for him.
"He won already 11 grand slams before but never the French. This is the best one for me for sure."
Djokovic's triumph completed his set of slam titles and made him the first man since Rod Laver in 1969 to hold all four trophies at the same time.
For all the achievements of Roger Federer and Rafael Nadal, both men fell short of emulating Laver.
Djokovic has won five of the last six grand slams and is now only five short of equalling Federer's record of 17.
The Serbian, who also becomes the first player to earn more than 100million US dollars in prize money, is clearly firmly in the picture to be considered the greatest player of all time and shows no signs of stopping any time soon.
Vajda, who has shared coaching duties with Boris Becker since 2013, said: "History will tell but for sure he's there. He's one of the best now.
"It's tough to say greatest but according to the grand slams he's getting close to Federer and close to Nadal. We'll see what the future brings but he's there, he's the best player now, and winning the French I think will give him a boost.
"I don't know if he thinks to reach 17 but he reached 12 and this is the time to enjoy it."
Djokovic would not say so but achieving something that neither Federer nor Nadal has ever done must give him immense satisfaction.
For all his dominance and brilliance, his profile around the world still does not compare to the sport's two most popular champions.
"They're still active players, so I think it's fair to say that they still have a chance to do this," said Djokovic. "They were both not a match but a couple of sets away from doing that a few times in their careers.
"These two guys, and Andy, as well, the rivalries with all three of the guys have definitely, in a big part, helped me to become a better player and helped me achieve all these things.
"Of course the rivalries that we have are important for the sport and, in one way or another, you try to compare yourself to them and what they have achieved before.
"Nadal and Federer were so dominant in the sport when Andy and myself came into the mix. A t the beginning I was not glad to be part of their era.
"Later on I realised that in life everything happens for a reason. You're put in this position with a purpose, a purpose to learn and to grow and to evolve.
"Fortunately for me I realised that I needed to get stronger and that I needed to accept the fact that I'm competing with these two tremendous champions and then everything was uphill from that moment on."
By becoming the first man for 24 years to win both the Australian Open and the French Open titles in the same year, Djokovic has also given himself the chance to follow Laver again by winning the calendar Grand Slam.
He has already won Wimbledon three times and the US Open twice and it would not be surprising in the least if he completed the clean sweep.
"I really think everything is achievable in life," said the world number one.
"Winning this trophy gave me so much happiness and fulfilment. I'm trying to grasp and I'm trying to cherish, obviously, these moments right now.
"Whether or not I can reach a calendar slam, that's still a possibility. But I don't think about it right now."
Source: PA
