RENTON, Wash. (AP) — When Zach Charbonnet went down with a season-ending knee injury against the San Francisco 49ers in the divisional round of the NFC playoffs, Kenneth Walker III rushed onto the field to check on his Seattle Seahawks backfield mate. Initially, Walker was told Charbonnet – who led the Seahawks with 12 touchdown runs and became the first Seattle player since Marshawn Lynch in 2014 to rush for at least 10 scores in a season – was going to be OK. Walker instead has taken on an increased role as the Seahawks move within one win of their second Super Bowl title in franchise history. “Obviously, it’s unfortunate what happened to him,” Walker told The Associated Press.