Who are the rock-solid backmen and intercept kings of the AFL? This tier list ranks the league's premier defenders, from the staunch custodians of the Western Bulldogs and Brisbane to the dashing interceptors of Geelong and Richmond. We'll explore the lockdown specialists of Collingwood and St Kilda, the aerial prowess of Melbourne and Adelaide, and the versatile game-changers from Carlton and Fremantle. Prepare to debate which defensive units are truly elite and who's holding the fort with unmatched authority.