You can use a regex:

 my $line = 'RONNIE NUNN|RON OLESIAK|PHIL ROBINSON';
 $line =~ s/\b(.)(\w*)\b/\u$1\L$2/g;

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In reply to Re: Converting letters from uppercase to lowercase. by bikeNomad
in thread Converting letters from uppercase to lowercase. by Perl Newby

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