Unfortunately, in this day and age, there is doubt for every boxer regarding PEDs unless there is transparent VADA-style testing 360 days a year. A top boxer could cycle in and off when he's not being tested and still benefit a lot. It's hard not to have doubts about Floyd, Manny, Hopkins etc.

Manny wouldn't submit to tests. Suspicious.

There's a lot of rumors about Floyd too. Allegedly, his attorneys come down hard on people when accusations are made. Two or three boxers on his team in his camp tested positive. Suspicious.

Hopkins hasn't done VADA-style testing. Suspicious.

The only fighter I'm pretty confident isn't on anything is Nonito Donaire.