I have him in the top 20 already as well and will give him top 10 and arguably top 5 if beats Mayweather (depending on the performance). He's done things that ATGs are expected to do. Take on tough challenges, comeback and win after tough losses, win titles and successfully defend them ( at least in some of the weight classes) and bring the masses to boxing. His career isn't over yet but so far he is clearly one of the best fighters of his or any other generation in boxing.