San Francisco offensive tackle Anthony Davis (76) and offensive tackle Alex Boone (75) block against St. Louis during the first quarter of an NFL football game in Santa Clara, Calif., Sunday, Nov. 2, 2014.
San Francisco offensive tackle Anthony Davis (76) and offensive tackle Alex Boone (75) block against St. Louis during the first quarter of an NFL football game in Santa Clara, Calif., Sunday, Nov. 2, 2014. Marcio Jose Sanchez AP
San Francisco offensive tackle Anthony Davis (76) and offensive tackle Alex Boone (75) block against St. Louis during the first quarter of an NFL football game in Santa Clara, Calif., Sunday, Nov. 2, 2014. Marcio Jose Sanchez AP