49ers place Ian Williams on physically unable to perform list

The San Francisco 49ers place nose tackle Ian Williams on the physically unable to perform list.

Williams broke his leg last season against the Seattle Seahawks.

He's had four surgeries on the leg.

It was Williams' first career start when he got injured.

A former Notre Dame player entering his fourth season, Williams has played in six games for the 49ers.

Williams can be activated at any time.

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Aaron Wilson covers the Ravens for The Baltimore Sun

Aaron Wilson
Aaron Wilson covers the NFL for National Football Post, his second stint at the Post. He has previously written for Pro Football Talk and FOX Sports-Scout. Entering his 13th year covering the Baltimore Ravens, he's a beat writer for The Baltimore Sun. Wilson has also covered the Jacksonville Jaguars and Tennessee Titans.

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