no order. p4p obviously. these are mostly small guys
explosiveness in terms of the nature of their punching power
broner
gamboa
bute (bute's a bit different. he's got a lot of thud to his shots as well. in terms of accelerating through the target, though, he's up there)
donaire
pacquiao (might be fading a bit, but he can still crack. still broke marg's face. still dropped shane. croaked hatton. smashed cotto. and he's not a big guy.)
Pacquiao OF COURSE!
love Gary Russell Jr explosiveness! because of his hands speed he is able to rattle off sick combos but still be able to avoid punches and use good Defense
Gamboa OF COURSE!
Bradley also! Timothy has an amazing head/body combo he uses and also that extremely fast and explosive OVER HAND RIGHT that has knocked back or staggered every opponent he faced
I agree with Berto and Khan and some of the other fighters that been posted already
I'm surprised nobody mentioned Pascal.
Pacquiao
Khan
Gamboa
Sillakh
Bradley/Rigondeaux
Sillakh is the opposite of explosive.
Just explosive?
Berto
Dirrell
Gamboa
Broner
Floyd
Good list. Of course they got nothing on the man in your avatar...
I'd say it's mostly natural, it's hard to work on explosivness with amount of conditioning that's needed for 12 round fight.
But still you can see them working with medicine balls, lifting weights, working on a track, there are certain things that are used in plenty of sports.