boxing all about openind doors and collazo has but his shiney head on the boxing map and it could prove preety lucrative i think zab and collazo would be a good fight maybe!! but if the good zab shows up like the one in the first 6 rounds against pbf then i think his skills might be to much for callazo but then again callazo found away to neutralise an unimpressive hatton maybe he could do thye same to zab this will probbaly never happen i would just love to see collazo fight another big name!!