NFL

Pollard is one of the most fearsome head-hunters in the league and led the Ravens in tackles last year, but there's a reason he's on his fourth team in seven years. Previous reports stated the 28-year-old is a problem in the locker room and nearly staged a mutiny in Baltimore last year. He also struggles mightily in coverage, where ProFootballFocus ranked him 68th among 85 qualifying safeties. Pollard will give the Titans some toughness as he steps in ahead of George Wilson opposite Michael Griffin, but there's more name than game here.