SANTA CLARA -- Wide receiver Mario Manningham, who missed Sunday's game with a right shoulder injury, was not on the practice field Wednesday as the 49ers opened preparations to face the New England Patriots.
Manningham's status for Sunday's game is in question. Michael Crabtree and Randy Moss both played more than half of the 49ers' snaps against the Miami Dolphins on Sunday with Manningham out. Rookie A.J. Jenkins saw his first NFL action, taking part in eight offensive snaps.
Outside linebacker Aldon Smith, fullback Bruce Miller and special-teamer Tavares Gooden each wore black jerseys at practice Wednesday, indicating that they were off-limits for contact. Each is expected to play against the Patriots.
WASHINGTON -- The NAACP on Wednesday called for a meeting with the NFL to discuss the fate of quarterback Colin Kaepernick, who refused to stand for the national anthem to protest police brutality against African-Americans.
The former San Francisco 49ers quarterback once took his team to the Super Bowl, but he's a free agent now and no club has signed him.
Some Kaepernick opponents say he should not have sat or kneeled during the anthem, while others contend his lack of a job is more about his on-field talent.
Kaepernick's supporters, including some who planned to protest at the NFL's headquarters in New York City on Wednesday, say the quarterback is being blackballed for his advocacy.
The NAACP intended to join that rally, and Derrick Johnson, the organization's interim president and CEO, said in the letter to the NFL commissioner, Roger Goodell, that it's apparently "no sheer coincidence" that Kaepernick isn't on a roster today.
"No player should be victimized and discriminated against because of his exercise of free speech - to do so is in violation of his rights under the Constitution and the NFL's own regulations," Johnson said.
Hazel Dukes, the NAACP's state president in New York who was expected to be among the rally speakers, said: "Right now, the action of the league seems to imply to young black men that this league, which is comprised of 70 percent African-Americans, only values black lives if they are wearing a football uniform."
The San Francisco 49ers announced Wednesday they have signed DL Sen'Derrick Marks to a one-year deal.
Marks (6-2, 305) was originally drafted by the Tennessee Titans in the second round (62nd overall) of the 2009 NFL Draft. In four seasons with the Titans (2009-12), he appeared in 51 games (26 starts) and registered 180 tackles, eight passes defensed, three sacks, three forced fumbles and one interception. Prior to the 2013 season, he signed with the Jacksonville Jaguars where he spent the last four seasons (2013-16). With the Jaguars, he appeared in 52 games (35 starts) and registered 104 tackles, 16 sacks, 13 passes defensed, five fumble recoveries and three forced fumbles. In 2014, he led the team with a career-high 8.5 sacks. Last season, he appeared in all 16 games (one start) and finished with 22 tackles, 3.5 sacks, one fumble recovery and one pass defensed. He was released by the team on March 9, 2017.
A 30-year-old native of Mobile, AL, Marks attended Auburn University where he appeared in 40 games (37 starts) and registered 114 tackles, 30 tackles for loss and 7.5 sacks.
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