‘Buffalo has insurance behind Losman, who threw just five passes as a rookie. Kelly Holcomb was signed as a backup and has shown that he can be more than just a stopgap if the kid needs relief help. Mularkey hopes, however, to let Losman get experience while the defense carries the team. The Bills think that can be enough, and point to a late-season six-game winning streak last year as a sign the team is coming on.’