Former Buffalo Bills offensive guard Erik Pears visited the San Francisco 49ers, according to a league source. The 6-foot-8, 316-pounder has played for the Bills for the past five seasons. He's started 55 games over the past four seasons. Pears, 32, started every game last season at right offensive guard. Pears has also played right offensive tackle. Pears didn't grade out highly last season. Follow me on Twitter: @RavensInsider Aaron Wilson covers the Ravens for The Baltimore Sun