Kareem Hunt spent the summer and the first couple of weeks of the NFL season working out at his high school, or going to stretch and hit the sauna at the YMCA. He was 29 years old, an advanced age at running back.

For the fourth time in the past five years, the Kansas City Chiefs will represent the AFC in the Super Bowl. Each year, CBSSports.com takes a look at how the championship rosters were constructed. The Chiefs' inclusion begins with quarterback Patrick Mahomes,