Jamaal Charles: Coach Andy Reid unsure about Chiefs star running back's return; Rookie Davis could make debut against Dolphins

The Kansas City Chiefs have begun the season 0-2 and lost one of the best linebackers in football, Derrick Johnson, during Week 1. In addition, they also had two more injuries during their first game. So, the last thing the Chiefs needed was more bad news. However, that's exactly what they got.