Lots I don't like about him, but Floyd qualifies. Shane is a close but clear call (in), but Hopkins is a gimme (not a gimmie as to whether he's still active, though). Wlad has a shot, but not there yet. Can be done, though.
Manny Pacquiao Floyd Mayweather Bernard Hopkins Roy Jones Evander Holyfield Are Marco Antonio Barrera and Erik Morales considered "active"? I haven't heard anything regarding Barrera's future, and Morales is supposed to come back, but I think his return got delayed. You can add Shane Mosley and Juan Manuel Marquez if you'd like. The term "ATG" is pretty subjective.
It's not what the thread starter asked for, but i'm going to stick my neck out and guess Hozumi Hasegawa will make it...
Good list. Barrera is still active, kind of. Right at the end of his career though. Morales is rumoured to be planning a comeback, which is rather pointless in my eyes.
A tad premature perhaps, but depending on how he finishes his career, Wladimir Klitschko might be a candidate.
Marco Antonio Barrera Roy Jones Junior Bernard Hopkins Manny Pacquiao Juan Manuel Marquez Evander Holyfield. Floyd Mayweather Jr.