Buffalo Bills star Mario Williams will start the team's training camp on the active/non-football injury list.
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Williams on Active/NFI List
Thursday, July 30
Chris Brown reported the news on Williams for the Bills' official website but couldn't specify what happened to the four-time Pro Bowler that landed him on the sidelines.
Williams joined Buffalo as a free agent in 2012 following six seasons with the Houston Texans. He's played all 48 regular-season games in his first three years with the Bills, so durability shouldn't be a concern.