Just to put in perspective how talented federer truly is, he is 31 years old and still on the upper 2 percentile of all active tennis professionals
Laver won yet another Grand Slam at age 31. For Federer winning Wimbledon and briefly returning to #1 at 30 seems amazing, but for Laver winning all the slams at 31 was just ho hum, yet another day at the office.
Agassi was ranked #1 in the World and a Slam Champion at 33.
Serena has owned the last 3 major tournaments and made a mockery of the Worlds so called top 2 ranked players at 31.
How is what you said such an amazing feat.