my $tournament = $dbh->selectrow_hashref('SELECT * FROM tournaments NATURAL JOIN seasons NATURAL JOIN countries NATURAL JOIN machines NATURAL JOIN scoringsystems WHERE tournament=?', undef, $id);
my $registered = ccbs::db_fetch_all($dbh, 'SELECT * FROM tournamentparticipation NATURAL JOIN players WHERE tournament=?', $id);
my $tournament = $dbh->selectrow_hashref('SELECT * FROM tournaments NATURAL JOIN seasons NATURAL JOIN countries NATURAL JOIN machines NATURAL JOIN scoringsystems WHERE tournament=?', undef, $id);
my $registered = ccbs::db_fetch_all($dbh, 'SELECT * FROM tournamentparticipation NATURAL JOIN players WHERE tournament=?', $id);