The Buffalo Bills have signed fifth-round offensive guard Cyril Richardson.

Richardson was twice named Big 12 Offensive Lineman of the Year.

The 6-foot-4, 343-pounder is a massive drive blocker.

Richardson played in the Senior Bowl all-star game, but his stock fell after a rough week of practices.

Only the Bills' top two draft picks: wide receiver Sammy Watkins and offensive tackle Cyrus Kouandjio have yet to agree to terms.

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Aaron Wilson covers the Ravens for The Baltimore Sun