There are just some guys who, when you see them across the field from your favorite team, you start to worry—guys who strike fear into the hearts of fans.
We start off a list like this with Jared Allen. "The Mullet" continues to play at a high level and is always in the backfield right after the snap. Last season, he had 47 solo tackles, 17 assists and a career-high 22 sacks. He's just as dangerous to an offense now as he was back in Kansas City, and he will ruin any quarterback's day.
Some quarterbacks will ruin a defense's day, though, and Aaron Rodgers heads that list. Rodgers can kill defenses with his feet or his arm, and he makes complete use of his array of weapons—guys like Greg Jennings, Jordy Nelson and Jermichael Finley. It's awfully hard to stop him, even when he offensive line collapses or his run game dies. He just keeps throwing touchdowns.
Another guy that teams can't stop and can barely contain is the Detroit Lions' Calvin Johnson. "Megatron" gets double-teamed or triple-teamed all the time, yet he produces stunning numbers every year.
This year, he's got weapons around him, so it's even worse. Now, teams will need to choose between over-committing to Johnson and getting beat by someone else or covering everyone and watching Johnson destroy single coverage.
If a team is going to have a shot at stopping a guy like Calvin Johnson, it has to have a guy like Darrelle Revis. Probably the best cover corner in the game, Revis has a hit list of shut-down receivers like a who's who of NFL talent: Andre Johnson, Randy Moss, Calvin Johnson—they have all been shut down by Revis.
The thing is, he's human and can get beat, but it happens so infrequently that it surprises us every time. Most plays just end up sitting in a beach chair on "Revis Island."
Revis isn't the biggest beast in New York City, though—that's Jason Pierre-Paul. Giants fans are definitely down with JPP, even if most opposing quarterbacks are not.
Pierre-Paul is a relentless monster who gets into the backfield and disrupts plays with alarming regularity. He's fast, fierce and focused, and he will put a quarterback down for the count.
A large part of the Giants' Super Bowl win last year was because of his emergence as a tremendous player. He steps on the field, and teams know that trouble is coming.
Who are your picks for most feared players? Let us know down in the comments.