Oakland fans will barely recognize (Langston) Walker, the team's second-round draft pick in 2002. Not because Walker looks different - he's still a mammoth at 6-foot-8, 366 pounds. Rather, it's his steady play on the field that has been quite the Renaissance.

He was Oakland's starting right tackle in 2006 when the line allowed an NFL-high 72 sacks. The Bills took one long look at the unrestricted free agent and signed him to a five-year, $25 million contract that offseason.

Suddenly, pass protection wasn't his weakness. Walker started 16 games on an offensive line that allowed an NFL-low 26 sacks, which set a franchise record.

"I think the Bills saw a good product and they went after it," Walker said.