You can scratch “free-agent-to-be” from in front of San Francisco 49ers cornerback Tramaine Brock’s name.
Brock agreed Friday to a four-year extension, according to the team’s official website. Eric Branch of the San Francisco Chronicle reported the deal is worth $16 million with $7 million of that figure guaranteed.
Brock was a key special teams player for his first three seasons in San Francisco and has taken on a bigger role in the secondary in 2013. Brock made his first career start against Houston last month and had two interceptions, one of them which he returned for the first touchdown of his career.
Brock has four interceptions in his last six games.
Signed as an undrafted free agent out of Bellhaven, an NAIA school in Jackson, Miss., Brock has 34 tackles, six interceptions, 14 passes defensed and a touchdown, with 22 of those tackles coming on special teams.
The extension would indicate the team has plans to expand Brock’s role into that of a starting corner next season. He played just 135 defensive snaps in his first three years, but was named NFC Defensive Player of the Week for his performance against the Texans.
Pro Football Focus rates Brock as tied for 18th in overall rating among NFL cornerbacks, with opposing quarterbacks completing 21-of-38 passes his direction (55.3 percent) for 330 yards and three touchdowns with four interceptions for a passer rating of 71.1.
Looking ahead to 2014, 32-year-old Carlos Rogers could be a salary cap casualty. He declined to take a pay cut last spring and is on the books for $6.25 million for 2014.