EAST RUTHERFORD, N.J. –** Jacquian Williams, the Giants' leading tackler for most of the season, will not play again in 2014.
Williams and offensive lineman James Brewer were today placed on injured reserve, each because he has a concussion.
They were replaced on the roster by defensive tackle Dominique Hamilton, who was signed off the Giants' practice squad, and offensive lineman Adam Gettis, signed off the Pittsburgh Steelers' practice squad.
The Giants also signed defensive back Thomas Gordon to their practice squad.
Williams, a fourth-year pro, started each of the first nine games at weakside linebacker before suffering a concussion at Seattle on Nov. 9. At the time of his injury, his 75 tackles (52 solo) led the team. Williams has been inactive each of the last five games and he is still second on the team in tackles, trailing only Jameel McClain.
In his career, Williams has played in 51 regular-season games with 22 starts. He has 217 tackles (165 solo) and 2.0 sacks.
Brewer, also in his fourth season, was inactive for the first 10 games this year. He made his season debut at tackle and on special teams vs. Dallas on Nov. 23. The following week in Jacksonville, Brewer was playing tackle when he suffered a concussion. He has been inactive the past two games.
The Giants have signed OL Adam Gettis
Brewer, a fourth-round draft choice in 2011, has played in 26 career games with eight starts, all in 2013.
Williams and Brewer increase the number of Giants players on injured reserve to 22.
Hamilton, 6-5 and 315 pounds, first joined the Giants' practice squad on Sept. 3. He was signed to the active roster on Dec. 2, but waived four days later, when linebacker/defensive end Paul Hazel joined the team. Hamilton was re-signed to the practice squad on Dec. 8.
Hamilton entered the NFL as a rookie free agent with the Oakland Raiders in 2012. The Missouri product spent most of that season on Washington's practice squad. In 2013, Hamilton was on the practice squads of both the Redskins and the Kansas City Chiefs. He played in all four of Kansas City's preseason games before being waived on Aug. 30. Hamilton has never played in a regular-season game.
Gettis, 6-3 and 305 pounds, was a 2012 fifth-round draft choice of the Washington Redskins, from Iowa. In 2013, he played in 13 games for Washington special teams. In two of those games, he played a total of 17 snaps on offense. Gettis was waived on Aug. 25 and has been on Pittsburgh's practice squad since Oct. 15.
Gordon was signed by the Giants as a rookie free agent from Michigan on May 12. He played in all five of the Giants' preseason games and had seven tackles, five of them at Indianapolis on Aug. 16. Gordon was waived on Aug. 31.