This is what we've been playing for--it's championship week! Below are RotoBaller's Week 16 defense tiers and rankings, or which defenses to stream, start and target off the waiver wire for Week 16 of the NFL and fantasy football season.Our weekly tiered defense rankings are a guide to making waiver wire pickups to improve your lineups, and to decide which defenses to start, sit, target, avoid or stream for [...]