▁bout ▁in ▁October ▁ 1 9 4 2 , ▁Arm strong ▁had ▁taken ▁world ▁titles ▁in ▁both ▁the ▁Wel ter weight ▁and ▁Light weight ▁divisions . ▁ ▁On ▁January ▁ 1 , ▁ 1 9 3 7 , ▁Zur ita ▁defeated ▁Spanish ▁box er ▁Balt as ar ▁Sang ch ili ▁in ▁a ▁ten ▁round ▁points ▁decision ▁in ▁Mexico ▁City . ▁In ▁June ▁ 1 9 3 5 , ▁Sang ch ili ▁had ▁taken ▁the ▁I BU ▁World ▁B ant am weight ▁Title ▁in ▁Val encia , ▁Spain , ▁and ▁had ▁taken ▁the ▁World ▁B ant am weight ▁Championship ▁in ▁the ▁same ▁year . ▁ ▁Zur ita ▁defeated ▁New ▁York ▁based ▁Puerto - R ican ▁born ▁K oli ▁K olo ▁around ▁June ▁ 1 , ▁ 1 9 3 8 , ▁in ▁a ▁fourth ▁round ▁knock out ▁in ▁T ep ic , ▁N ay ar it , ▁Mexico . ▁The ▁exact ▁date ▁of ▁the ▁bout ▁remains ▁unknown , ▁and ▁may ▁have ▁occurred ▁the ▁month ▁earlier . ▁ ▁On ▁June ▁ 1 8 , ▁ 1 9 3 8 , ▁Zur ita ▁defeated ▁tal ented ▁Mexican ▁box er ▁Rod ol fo ▁" B aby " ▁Cas an ova ▁in ▁Gu adal aj ara , ▁J alis co , ▁Mexico ▁in ▁a ▁sixth ▁round ▁Techn ical ▁Kno ck out . ▁It ▁was ▁Zur ita ' s ▁only ▁win ▁against ▁Cas an ova . ▁On ▁August ▁ 2 0 , ▁ 1 9 3 8 , ▁Zur ita ▁would ▁lose ▁to ▁C ason ova ▁in ▁a ▁sixth