SANTA CLARA, Calif. � Left tackle Joe Staley has agreed to a six-year contract extension with the San Francisco 49ers that will keep him with the club through 2017.

A first-round pick in 2007, Staley started every game at right tackle as a rookie before moving to the other end of the line last year to replace the injury-prone Jonas Jennings.
Staley has played every offensive snap in his first two seasons with San Francisco since joining the club from Central Michigan.
General manager Scot McCloughan lauded Staley�s work ethic in commenting on a deal he says puts the Niners in a good position going forward.