The change came first in 2014 with the racket change, but the new backhand that neutralized Nadal didn’t come into play until his comeback after the long absence. When you are in the tour competing, it’s a grind. These guys play 40 weeks a year, it’s travel, play, recuperation, rinse and repeat, and on top of that also the media responsibilities, other money-making schemes. There are very little time during which you can fundamentally change your approach to the game, practice and finesse it. I agree that he waited too long for it, since many of his fans who are avid followers of the game have screamed out for years about working on the backhand, but it’s always easier to stick to your way. How much different are Nadal/Djokovic now compared to their pomp in the turn of the decade? Not a lot.
They stand out, but still aren’t exception to the rule. Well, except for Djokovic. Fed won 12 Slams by 26, 8 since. Nadal won 11 Slams by 26, 6 since. Djokovic currently stand at 6-6. So yeah, one has already tapered off, and the other were off for 15 months before now gaining back his mojo somewhat.
The first time his age feel like a factor was the semi final of USO 2010 when he bungled a 2 set lead and match point in the fifth to lose to Djokovic. The next year he got beaten at Wimbledon by Tsonga of all people after another 2 sets lead. Even if you don’t feel that way, doesn’t make it untrue. The majority of the tennis world were wondering whether he was done at Slams then, that’s why him winning Wimbledon in 2012 aged 31 was kind of a big deal. I however wouldn’t make the point that his lopsided h2h vs Nadal before he turned 29/30 was physical, but every man and his dog knew about the favorable technical match up in favor of Nadal, so even then ex-pros would still go: ‘Well he’s the best even if he loses often to Nadal’ in that period. For Djokovic, it’s quite simple: before 2010, 10-5 in favor of Federer. After, 18-12 in favor of Djokovic.