. . . "Net club-sourced revenue includes such things as sponsorships, signage, events, fund-raising, hospitality, match receipts, membership and merchandise.The big four clubs have also broken further away from the eight middle-tier teams, with the gap rising from $2.7 million in 2004 to $5.2 million in 2012, and the richest clubs also proving the most successful.The performances of the AFL's two new clu" .