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Mario Williams

Bills double up on Ryans, with Rex hiring twin brother Rob

One Ryan wasn't enough for the Buffalo Bills.

Bills coach Rex Ryan hired his twin brother Rob to serve as the team's assistant head coach with a specific responsibility for defense, the team announced Sunday night. It marks the second time the two have worked together after previously serving as assistants on their father Buddy Ryan's staff in Arizona in 1994 and '95.

"I'm excited to have Rob join our staff, and I think he will be a great asset," Ryan said in a statement released by the team. "He has a tremendous working knowledge of our schemes and I look forward to his input."

The move comes after Ryan and team officials traveled to Florida to...