for my $user (($ref->{'team1_username1'}, $ref->{'team1_username2'},
$ref->{'team2_username1'}, $ref->{'team2_username2'})) {
if (!exists($ratings{$user})) {
for my $user (($ref->{'team1_username1'}, $ref->{'team1_username2'},
$ref->{'team2_username1'}, $ref->{'team2_username2'})) {
if (!exists($ratings{$user})) {