Rough year for Steelers' 2012 draft class

Chris Rainey's arrest Thursday was the latest issue in what has been a rough rookie season for the Steelers' 2012 draft class:

First round: David DeCastro, G, Stanford. Severely injured his knee in the third preseason game and returned to play the last three games.

Second round: Mike Adams, OT, Ohio State. Placed on injured reserve with an ankle injury after starting six games.

Third round: Sean Spence, ILB, Miami. Tore multiple ligaments in his left knee in preseason finale and placed on injured reserve before regular season started.

Fourth round: Alameda Ta'amu, NT, Washington. Arrested for drunken driving in October, which led to his release a month later. He was later re-signed.

Fifth round: Chris Rainey, RB, Florida. Arrested for simple battery Thursday. He had 162 total yards and two touchdowns as a rookie. (4:12 p.m. ET update: The Steelers have waived Rainey.)

Seventh round: Toney Clemons, WR, Colorado. Signed off Steelers' practice squad by the Jaguars in November.

Seventh round: David Paulson, TE, Oregon. Finished with seven catches for 51 yards in 16 games played for Steelers.

Seventh round: Terrence Frederick, CB, Texas A&M. Waived by the Steelers at the end of the preseason and was later signed by the Giants.

Seventh round: Kelvin Beachum, G, SMU. Surprise of the draft class ended season with five straight starts at right tackle.