We call it as it is. First of all, that would be the 'Zakman-Amsterdam system', show your respects to the original chin checker please. Like Zakman said, not all KD's are equal, Andrade dropped a spot from the 'titanium' ranking due to the fact he was KD'd, but he only dropped to 'cast iron', because he recovered quickly and took even harscher shots later on fully flush, proving still that his jaw is one of the hardest among current fighters. He drops from 'titanium' however, because titanium chinned fighters don't get dropped or buzzed when they are at their best. But it all depends on the knockdown, Pavlik's knockdown came from a non-puncher and he was almost out of his feet, I think Pavlik's chin is workable-solid, because Taylor did land a flurry, but a single shot is what stunned him and again, Taylor is no puncher, couldn't even put a dent in little Ouma and he landed the same types of shots as what KD'd Pavlik over and over again. And the 'suspect/questionable' list is there for chins that simply have questions that need to be answered, the suspect/questionable guys could very well turn out to have a great beard, however, when we put them there, it's for a reason.:yep Our chin exposing prediction ratio is 100%.
Pavlik chin is the worst in boxing.....when journeymen drop you and a world champ...you must question its durability!!!!