Through two weeks, Chiefs running back Kenneth Walker looks like one of the true prizes of free agency.

Walker currently leads the league in carries (47), rushing yards (290), touches (56), and yards from scrimmage (369).

But that usage rate also comes with some concerns, particularly at that position. Rookie Emmett Johnson has spelled Walker a bit, and he’s been effective with 39 yards rushing and four receptions for 64 yards. His snaps are likely to increase as the year goes on.

“Well, I think the way I look at it is … that’s part of the equation, but the other part is allowing Emmett to grow,” head coach Andy Reid said in his Monday video…

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