DUBLIN — The Steelers backfield is about to look vastly different Sunday against the Vikings at Croke Park.

Starting running back Jaylen Warren is inactive with a right knee injury. Warren was one of the first Steelers on the field pregame warming up and talking with head trainer Gabe Amponsah. Career backup Kenneth Gainwell, rookie Kaleb Johnson and Trey Sermon — elevated Saturday from the practice squad — are the healthy ball-carriers for this one.

Joey Porter Jr. will miss another game with his hamstring injury after being limited in practice all week. Outside linebacker Alex Highsmith (ankle) is also inactive and the healthy scratches are offensive lineman Andrus Peat and defensive lineman Esezi Otomewo.

With Porter out again, Darius Slay Jr. and Jalen Ramsey are the top two cornerb

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