Remember George Foreman.
Heavyweight Champ at 45.
Mayweather
Pacquaio
Similar sports requiring plenty of fast twitch.
I don't put any stock in age, athletes hang around a lot longer nowadays because the financial rewards are so great, even if you aren't the very best. 35 is a lot younger than it used to be.
Serena Williams shouldn't be winning grand slams at her age, but she is.
