I want to share a new module for tournament management.
It defines entities for persons (AKA players) and games (AKA matches), node types for teams, stadiums and matchdays.
Position tables are build over views allowing huge flexibility.
Groups and categories could be defined Drupal Way using taxonomies, node/entity references and/or OG.
Just achieved DEV status eventhough module is stable enough, but still lacks of some functionallity to be considered an oficial release.
Module could be downloaded here: League
Basic documentation here: Online documentation