▁at ▁times ▁when ▁his ▁oppon ent ▁occasionally ▁lower ed ▁his ▁defense . ▁ ▁The ▁thr illing ▁spect acle ▁which ▁attract ed ▁ 8 , 2 3 0 ▁featured ▁a ▁close ▁contest ▁between ▁Cast ell ani , ▁the ▁top ▁cont ender ▁for ▁the ▁middle weight ▁championship ▁and ▁Robinson , ▁who ▁would ▁successfully ▁defend ▁his ▁title ▁against ▁Bob o ▁Ol son ▁in ▁his ▁next ▁fight ▁on ▁December ▁ 9 , ▁ 1 9 5 5 . ▁ ▁Robinson ▁called ▁upon ▁all ▁his ▁fifteen ▁years ▁of ▁box ing ▁experience ▁to ▁win ▁the ▁bout ▁against ▁a ▁sk illed ▁oppon ent ▁who ▁was ▁nearly ▁his ▁equal ▁if ▁only ▁for ▁ten ▁r ounds . ▁ ▁A ▁year ▁earlier ▁on ▁August ▁ 2 0 , ▁ 1 9 5 4 , ▁Cast ell ani ▁lost ▁a ▁un anim ous ▁fifteen ▁round ▁decision ▁before ▁a ▁crowd ▁of ▁ 1 1 , 0 0 0 ▁to ▁Carl ▁" Bob o " ▁Ol son ▁for ▁the ▁World ▁Middle weight ▁Title ▁in ▁Dal y ▁City . ▁ ▁Ol son ▁was ▁the ▁World ▁Middle weight ▁Champion ▁from ▁ 1 9 5 3 - 5 5 . ▁ ▁In ▁the ▁ele vent h , ▁Ol son ▁was ▁down ▁for ▁a ▁three ▁count ▁when ▁his ▁legs ▁tang led ▁with ▁his ▁oppon ent ' s , ▁but ▁Cast ell ani ▁was ▁down ▁for ▁a ▁full ▁nine ▁count ▁in ▁the ▁tw elf th ▁from ▁a ▁cr ushing ▁right ▁over hand ▁from ▁Ol son . ▁ ▁In ▁the ▁remaining ▁three ▁r ounds , ▁Cast ell ani , ▁wounded ▁and ▁exha