Unpredictability a blessing and curse for NASCAR's 2013 Chase

10. Jeff Gordon (unranked) -- You could make a case for several drivers landing this final spot in the Power Rankings, including Carl Edwards, who is fourth in

Longshot Kurt Busch (left) will likely make the Chase, but defending champ Brad Keselowski may not :: Jared C. Tilton/Getty Images

10. Jeff Gordon (unranked) -- You could make a case for several drivers landing this final spot in the Power Rankings, including Carl Edwards, who is fourth in the point standings. But Edwards has managed only three top-10s over the past nine races and has finished 18th and 39th in his past two starts. Gordon, meanwhile, has six top-10s in nine races, including two in a row. In terms of momentum, the edge goes to Gordon.