ThirdEye
Semi-Pro
People are talking about the age of 34 as if it's ancient. It really isn't that old especially if you can stay in shape and avoid injury which Federer has done. Players are playing at a high level for longer now. Stan is 30 and just won the French and up until this year, another player in his 30's Ferrer was regularly reaching the later stages of slams. Years ago, even Djokovic would be considered old at 28.
I know it's easy to focus on the present and perhaps forget what a players level was 10yrs ago but I've heard so many ex tennis players and pundits comment on how good Federer's movement is. Having played the game these guys know what they are talking about. So perhaps it's not beyond the realms of possibility that Federer's physicality, stamina, movement etc has not actually declined at all.
Yeah, he switched from a 90" frame which gave him 17 slams to a 97" just because.