The Steelers fear T.J. Watt suffered a torn pectoral muscle during the overtime win over the Bengals

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The Pittsburgh Steelers won the season opener in thrilling fashion, but the victory came on the road.

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The Steelers dread that star pass rusher T.J. Watt suffered a torn

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pectoral muscle during the fourth quarter of their 23-20 win over the

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Bengals on Sunday, NFL Network's Mike Giordi reported.

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NFL Network insider Ian Rapaport added that Watt is scheduled for

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an MRI on Monday to confirm the diagnosis.

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Steelers head coach Mike Tomlin told reporters after the game that

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Watt was being evaluated for an upper-body injury.