Organization has many players League has many teams has many players Bar has many teams string - name contact info Team has many players belongs to league has a home bar string - name Players has many leagues has many teams has many organizations has many games contact info (name, address, phone, email, etc) Lineup date players Games Has one player as winner Has one player as loser int - Loser Score Match Has one home team Has one away team has home lineup has away lineup Has many games (16) round scores