Pittsburgh Steelers safety Mike Mitchell injured his groin while working out and is starting training camp on the physically unable to perform list.

Mitchell was signed to a five-year, $25 million contract this offseason.

Running back Alvester Alexander joined Mitchell on the list.

Mitchell is expected to be out a week.

Meanwhile, center Maurkice Pouncey will be taking a full workload after tearing his anterior cruciate ligament last year.

“He’s ready to go,” Steelers coach Mike Tomlin said.

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Aaron Wilson covers the Ravens for The Baltimore Sun