It has everything to do with data types! @athelete[$i,$j], $athelete[$i, $j] and $athelete[$i][$j] are completely different. Try to use the Data::Dumper to investigate why: 
use strict;
use Data::Dumper;

my @array;

for (my $i=0;$i<2;$i++)
{
  for (my $j=0;$j<2;$j++)
  {
     @array[$i, $j] = "$i.$j";
  }
}
print "Case 1...\n";
print Dumper(@array);

for (my $i=0;$i<2;$i++)
{
  for (my $j=0;$j<2;$j++)
  {
     $array[$i][$j] = "$i . $j";
  }
}
print "Case 2...\n";
print Dumper(@array);

for (my $i=0;$i<2;$i++)
{
  for (my $j=0;$j<2;$j++)
  {
     $array[$i, $j] = "$i . $j";
  }
}
print "Case 3...\n";
print Dumper(@array);

[download]
You will get - 
Case 1...
$VAR1 = undef;
$VAR2 = undef;
Case 2...
$VAR1 = [
          '0 . 0',
          '0 . 1'
        ];
$VAR2 = [
          '1 . 0',
          '1 . 1'
        ];
Case 3...
$VAR1 = '1 . 0';
$VAR2 = '1 . 1';

[download]
As you can see, only case 2 gives you what you want, a two dimensional array.

In reply to Re: Re: Where is my foreach data going to? by Roger
in thread Where is my foreach data going to? by brotherdaniel

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.