San Francisco guard Alex Boone (75) and tackle Joe Staley (74) line up against the Green Bay Packers during an NFL football game in Santa Clara, Calif., Sunday, Oct. 4, 2015.
San Francisco guard Alex Boone (75) and tackle Joe Staley (74) line up against the Green Bay Packers during an NFL football game in Santa Clara, Calif., Sunday, Oct. 4, 2015. Jeff Haynes The Associated Press
San Francisco guard Alex Boone (75) and tackle Joe Staley (74) line up against the Green Bay Packers during an NFL football game in Santa Clara, Calif., Sunday, Oct. 4, 2015. Jeff Haynes The Associated Press