my $twig= new XML::Twig( 
                twig_handlers =>                  # player will be called
                  { player => \&player }          # when each player element
                       );                         # has been parsed

$twig->parsefile( "nba.xml");                     # build the twig
$twig->flush;                                     # flush the end of the twig  

sub player
  { my( $twig, $player)= @_;                      # handlers params are always
                                                  # the twig and the element