▁and ▁Jimmy ▁Car r uth ers . ▁ ▁Dennis ▁entered ▁the ▁ring ▁against ▁ 4 ▁World ▁Champions . ▁ ▁He ▁fought ▁over ▁a ▁ 1 0 0 ▁f ights ▁including ▁ 3 0 ▁title ▁f ights , ▁with ▁ 8 5 % ▁in ▁vict ories , ▁ 5 0 % ▁K O ' s , ▁ 2 6 ▁K O ' s ▁in ▁under ▁ 2 ▁r ounds , ▁ 3 ▁K O ' s ▁under ▁ 1 ▁round ▁and ▁ 2 ▁K O ' s ▁under ▁ 3 0 ▁seconds ▁of ▁the ▁first ▁round . ▁ ▁Tit les ▁held ▁ 1 9 7 0 - 1 9 7 2 ▁State ▁School bo ys ▁( August ▁ 1 9 7 0 ) ▁State ▁Nov ice ▁Tit les ▁( 1 9 7 0 ) ▁State ▁Open ▁Senior ▁Tit les ▁( 1 9 7 1 ) ▁Australian ▁Tit les ▁- ▁Ad ela ide ▁SA ▁( 1 9 7 1 ) ▁Australian ▁Tit les ▁- ▁Per th ▁W . A . ▁( 1 9 7 2 ) ▁Pacific ▁Games ▁T ah iti ▁( 1 9 7 2 ) ▁ ▁These ▁titles ▁were ▁never ▁lost ; ▁he ▁retired ▁with ▁all ▁titles . ▁ ▁At ▁the ▁ 1 9 7 2 ▁Olympics ▁in ▁Mun ich ▁He ▁was ▁one ▁of ▁four ▁box ers ▁selected ▁to ▁represent ▁Australia ▁in ▁ 1 9 7 2 ▁in ▁the ▁Mun ich ▁Olympics . ▁ ▁De fe ated ▁Francisco ▁Rodríguez ▁( V enez uela ) ▁K O ▁ 2 ▁Lost ▁to ▁Gy ör gy