$dbh->do('DELETE FROM bigscreen.active_groups WHERE tournament=? AND round=? AND parallel=?', undef,
$tournament, $round, $parallel);
if ($cgi->param('show') eq 'true') {
$dbh->do('DELETE FROM bigscreen.active_groups WHERE tournament=? AND round=? AND parallel=?', undef,
$tournament, $round, $parallel);
if ($cgi->param('show') eq 'true') {