Buffalo Bills special teamer and reserve safety Jon Corto, the Orchard Park native, signed a contract extension, the team announced today. Corto's contract was set to expire on March 4. Corto joined the Bills as an undrafted free agent in 2007. He serves on most of the Bills' kick units had five special teams tackles in 2010. It's a smart move by Corto to re-sign. Special-teamers need to guarantee a spot in training camp with NFL players facing the prospect of a lockout.