The Giants today added some needed depth to their defensive line by signing tackles Carlton Powell and Oren Wilson.

The team also waived/injured defensive tackle Martin Parker, who has a herniated disk in his back that will require surgery.

Powell, 6-3 and 310 pounds, entered the NFL as a fifth-round draft choice of the Denver Broncos in 2008, the 148th overall selection. He spent his rookie season on the reserve/physically unable to perform list. Powell has since been on the practice squads of the Cleveland Browns and the Broncos and been in training camps with the Tampa Bay Buccaneers (2010) and the Jets (2011).

He was released by the Jets last Aug. 11 and signed four days later by the Atlanta Falcons. Powell played 38 snaps in Atlanta's first four games last season, recording an assisted tackle at Tampa Bay on Sept. 25. He was inactive for seven games before being released on Dec. 2 and was signed to the Falcons' practice squad four days later.

Wilson, 6-1 and 305 pounds, began his collegiate career at Michigan State, where he played in 38 games with 26 starts from 2007-2009 and had 43 tackles, 3.5 tackles for a loss, two fumble recoveries, two pass breakups and one sack. He played in three bowl games for the Spartans. After sitting out the 2010 season because of NCAA transfer rules, Wilson played in all 12 games for Akron last season. He was credited with 38 tackles (13 solo), 4.5 tackles for losses, 3.5 sacks and a blocked kicked.

The new Giants are expected to be in uniform Saturday when the Giants visit the Jets in the teams' annual preseason game.

The Giants were left thin at tackle this week when veteran Shaun Rogers (blood clot in leg) and Parker suffered season-ending injuries. Marvin Austin missed practice yesterday with a back issue (the players are off today).  And Chris Canty is still on the physically unable to perform list.