2019 Fantasy Football Rankings: Defense It gets tougher and tougher to write the fantasy football defense rankings article every year. Why? Because preseason D/ST rankings seem to matter less and less every year. It’s easy to sit here in the summer and say the Bears are “the best” fantasy defense — but it was easy last summer to put the Jaguars at the top of your draft cheat sheet, and we all know how that turned out. If you took Jacksonville in the middle rounds, you were likely heading to the waiver wire and looking for streamers and matchup-based sleepers by Week 5. Defense, more than any other position, is all about that week’s opponent.