▁Australian ▁David ▁Hook es ▁was ▁hit ▁a ▁sick ening ▁blow ▁from ▁a ▁b oun cer ▁bow led ▁by ▁West ▁Indian ▁Andy ▁Roberts . ▁Par ado x ically , ▁the ▁effect ▁of ▁Hook es ' ▁broken ▁j aw , ▁captured ▁graph ically ▁by ▁N ine ' s ▁cam eras , ▁served ▁to ▁" leg it im ise " ▁the ▁W SC ▁matches : ▁... ▁he ▁had ▁his ▁j aw ▁sh atter ed ▁by ▁a ▁b oun cer ▁from ▁Andy ▁Roberts ▁... ▁Until ▁that ▁moment , ▁W SC ▁had ▁looked ▁susp ici ously ▁like ▁a ▁thrown - t ogether ▁entertain ment ▁package ; ▁Hook es ' ▁injury ▁im pressed ▁the ▁contest ' s ▁intensity ▁on ▁all ▁obser vers . ▁ ▁This ▁incident ▁had ▁another ▁effect : ▁the ▁first ▁hel m ets ▁appeared ▁on ▁b ats men ' s ▁heads . ▁Initial ly , ▁English man ▁Dennis ▁Am iss ▁sport ed ▁a ▁motor cycle ▁hel met ▁when ▁batt ing ▁in ▁W SC , ▁and ▁he ▁was ▁quickly ▁followed ▁by ▁many ▁other ▁players . ▁Prote ct ive ▁cr icket ▁equipment ▁developed ▁rapidly , ▁and ▁by ▁the ▁end ▁of ▁W SC , ▁virt ually ▁all ▁b ats men ▁in ▁W SC ▁and ▁official ▁Test ▁matches ▁were ▁sport ing ▁some ▁form ▁of ▁protect ive ▁head we ar . ▁ ▁W SC ▁decided ▁to ▁place ▁a ▁greater ▁emphas is ▁on ▁one - day ▁cr icket ▁than ▁it ▁had ▁previously ▁been ▁given ▁in ▁Australia . ▁A ▁one - day ▁series , ▁the ▁" Intern ational ▁Cup " ▁featuring ▁the ▁Australian ,