Kenneth Walker III will sit out Kansas City's game Sunday as he deals with a minor groin strain, sources told ESPN's Adam Schefter and NFL Network's Ian Rapoport.
The Chiefs "want to give him a week," a source said of the plan for Walker. While the injury is considered minor, it occurring in practice on Thursday made it a tough turnaround for Walker.
Coach Andy Reid said Friday that Walker reported tightness in his groin to the team in the morning before the Chiefs' final on-field practice of the week.
Kansas City will be on the road against the Atlanta Falcons on Sunday in what was supposed to be a meeting of the league's top two rushers. Bijan Robinson leads the NFL with 880 yards ahead of Walker's 872.
With Walker out, the Chiefs will turn to rookie Emmett Johnson to lead their rushing attack.
Information from ESPN's Nate Taylor was used in this report.