▁S ull ivan , ▁also ▁a ▁former ▁world ▁champion , ▁by ▁a ▁knock out ▁in ▁ 2 0 ▁r ounds ; ▁against ▁future ▁world ▁champion ▁Billy ▁Pap ke ▁by ▁decision ▁in ▁ 1 0 ; ▁against ▁Hugo ▁Kelly ▁by ▁a ▁knock out ▁in ▁three ▁and ▁against ▁Thomas , ▁by ▁a ▁knock out ▁in ▁two . ▁ ▁Then , ▁he ▁lost ▁the ▁bel t ▁to ▁Pap ke ▁by ▁a ▁knock out ▁in ▁ 1 2 , ▁but ▁Pap ke ▁and ▁he ▁had ▁an ▁immediate ▁rem atch ▁and ▁K etch el ▁reg ained ▁the ▁title ▁when ▁he ▁beat ▁Pap ke ▁by ▁a ▁knock out ▁in ▁ 1 1 ▁in ▁their ▁third ▁match . ▁ ▁K etch el ▁began ▁ 1 9 0 9 ▁by ▁fighting ▁reign ing ▁Light ▁He avy weight ▁Champion ▁Philadelphia ▁Jack ▁O ' B rien . ▁K etch el ▁surv ived ▁a ▁terrible ▁be ating ▁at ▁the ▁hand ▁of ▁the ▁s lick , ▁quick ▁O ' B rien ▁in ▁the ▁early ▁r ounds , ▁only ▁to ▁mount ▁a ▁ter r ific ▁com eb ack ▁and ▁score ▁four ▁knock down s ▁in ▁the ▁nin th ▁and ▁t enth ▁r ounds . ▁When ▁the ▁final ▁bell ▁rang ▁at ▁the ▁end ▁of ▁the ▁ 1 0 th ▁round , ▁O ' B rien ▁was ▁lying ▁un cons cious ▁on ▁the ▁mat , ▁his ▁head ▁in ▁a ▁res in ▁box ▁in ▁his ▁corner . ▁Under ▁New ▁York ▁rules ▁at ▁the ▁time , ▁though , ▁O ' B rien ▁had ▁been ▁saved ▁by ▁the ▁bell ▁and ▁because