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The Patriots placed Thomas (Achilles) on their Physically Unable to Perform list Sunday, Field Yates of ESPN reports.

Thomas tore his left Achilles last December. It's the second such injury of the 31-year-old's career, as he tore his right Achilles in 2011. The Patriots signed him to a one-year, $2.9 million contract that's heavy on incentives and light on guarantees.

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