hi i have to following model class Match(models.Model):

    Team_one = models.ForeignKey('Team', related_name='Team_one') 
    Team_two = models.ForeignKey('Team', related_name='Team_two') 
    Stadium = models.CharField(max_length=255, blank=True)
    Start_time = models.DateTimeField(auto_now_add=False, auto_now=False, blank=True, null=True)
    Rafree = models.CharField(max_length=255, blank=True)
    Judge = models.CharField(max_length=255, blank=True)
    Winner = models.ForeignKey('Team', related_name='winner', blank=True)    
    updated = models.DateTimeField('update date', auto_now=True )
    created = models.DateTimeField('creation date', auto_now_add=True )
    def save(self, force_insert=False, force_update=False):
      pass

   @models.permalink
   def get_absolute_url(self):
       return ('view_or_url_name')
class MatchAdmin(admin.ModelAdmin):
   list_display = ('Team_one','Team_two', 'Winner')
   search_fields = ['Team_one','Team_tow']

 admin.site.register(Match, MatchAdmin)

i was wondering is their a way to populated the winner combo box once the team one and team two is selected in admin site ?