‘It stands to reason that the Bills would want to enhance their offensive line depth on their game-day roster. For one thing, Pears has been struggling as the starter at right guard. For another, rookie Cyril Richardson, whom veteran Kraig Urbik replaced at left guard for the Bills’ Oct. 26 game against the New York Jets, is listed as probable for Sunday after missing most of the week’s practices because of a death in his family.’