Weaknesses of shoulder roll.

[SugarBoxing]

I never really study shoulder roll, but facts are

1. Leonard showed the way
2. Oscar, Miadana and Castilio were quite effective
3. This is serious: Floyd faced many punchers, people with good one or two signature punches, but he never really faced a real flurry puncher who had the technique & power of Tyson or SRR or SRL, I mean this:

http://gfycat.com/WellmadeAlertFattaileddunnart

Oscar / Castilio had the technique, but lacked power
Maidana 1 had the power, but technique wise he was sloppy