Whoever coined the phrase "Defense wins championships"—depending on who you ask, it was either Bear Bryant or the dude from Radio—was actually making an understatement.
Defense turns losing football teams into winning teams, wild-card fodder into legit contenders and teams stuck on the wrong side of the hump into Super Bowl material.
But that doesn't mean defensive players get the attention they deserve. Just by looking at this summer's NFL trade rumor mill, you see how the guys who put points on the board still rule the kingdom.
All anybody wants to talk about are the quarterbacks (Carson Palmer, Donovan McNabb) and running backs (Chris Johnson, Reggie Bush) and receivers (Steve Smith, Larry Fitzgerald). Defensive players constantly get overlooked, even though it's likely they will be the ones involved in any trade that swings the League's power structure.
And yet for all its importance, defense remains fundamentally simple. NFL scouts love to over-analyze 40 times and agility drills and testicle diameter at the pre-draft combine, but at the end of the day, it comes down to getting the ball carrier on the ground as efficiently as possible.
Here are the 10 best tacklers who should available via trade this offseason: