Who's the hardest hitting safety in the NFL?

Your answer could be a player from the Denver Broncos, Champ Bailey has been to 11 Pro Bowls and Safety Brian Dawkins has been chosen for nine.

On Monday morning, Dawkins announced his retirement on Twitter. At the age of 38, he leaves the National Football League having played the Safety position longer than anyone.

Dawkins has played the last three years for the Broncos, before that he was with the Philadelphia Eagles for 13 years.

Brian Dawkins is also known by his alter-ego 'Wolverine.

Dawkins says he's not sure if he'll sign a one-day deal with Philadelphia to ceremoniously retire from the team that drafted him in the second round out of Clemson in 1996. He is sure that he's staying in Denver, he hopes to help coach high school football in the fall.

On Saturday, Dawkins plans to meet with the media in Philadelphia. He finished his career with the Eagles in 2008 as the franchise's leader in games played, with 183, and interceptions with 34.

Philadelphia Eagles' Head Coach Andy Reid says, "the NFL will miss a player as talented, ferocious and determined as Brian Dawkins." He continues, "he was one of the most dedicated and hardest working players I have ever coached. Whether it was on the practice field, the film room or the weight room, Brian always put in the extra hours it took to become the star player that he was. And he transferred all of that and more onto the field on Sundays"