Coach Mike Mularkey took the blame for keeping veteran cornerback Rashean Mathis on the sideline in Buffalo.
Mularkey said Monday he ''just made a mistake'' by sticking with second-year player Kevin Rutland in a 34-18 loss to the Bills.
Rutland got beat for a 51-yard gain on Buffalo's opening drive, which ended with a touchdown, and looked lost on Stevie Johnson's 13-yard TD reception early in the third.
Mathis watched both plays from the sideline, confused by being on the bench and convinced he could have made a difference.
''This is not to bash anybody. This is not to spark a big, `What's going on with Rashean thing,''' said Mathis, who was inactive for three games last month because of a groin injury. ''I do have a voice, and this is the little voice I want to be understood. ... I feel good. I feel like I'm in a position to help my team win.''
Mathis said he ''could have a right to act up'' s...