Baltimore Ravens

NFL is the ultimate league for professional football players. This sport is all about gaining the advantage over the opposition, and that means steamrolling them at every opportunity. Don't let all the protective gear fool you for a second – when a 300-pound athlete stops you dead in your tracks, it's like getting T-boned by a semi on an icy road. Ask any of the NFL players who have been involved in the hardest tackles ever, and they’ll certainly attest to the brute force of these bone-crunching sacks.