Posted by ESPN.com’s Bill Williamson

I just checked in with the always helpful Matt Williamson of Scouts Inc. to break down the Kansas City’s decision to cut Larry Johnson and move on with Jamaal Charles and Kolby Smith as the team’s running backs for the rest of the season.

Williamson on the decision to cut Johnson: “It was the right call. He was worthless to them.”

Williamson on Charles: “His main attribute is speed. He can fly. He has been compared to Chris Johnson, but he’s not in that class. He doesn’t have a runner’s instincts and he is not a pounder. But he can be a solid runner. I think Kansas City needs to make him the main running backs and give him opportunities to use his speed.”

Williamson on Smith: “He’s solid in all areas, but he’s not above average in any areas. He’s a guy you always like to upgrade from. But he can help Charles and they can work out fine for the rest of the season.”

What Kansas City should do at the position in the offseason: “I don’t think the Chiefs need to use their top pick on a running back. They could use Charles and Smith and add a guy in the third round or find a cheap veteran in free agency. The Chiefs need to use the New England offense which makes quarterback Matt Cassel comfortable. Spread it out, go with the shotgun and go from there. Kansas City needs to add a dynamic No. 2 receiver to go with Dwayne Bowe and use what they have in the running game. I think that team needs to use its resources elsewhere on offense. Go get a receiver and help the line.”