Four former Steelers to retire

Former Steelers Willie Parker, Joey Porter, Aaron Smith and Marvel Smith will retire as members of their old team prior to Friday night's practice.

Aaron Smith spent his entire 13-year career with the Steelers. He had 408 tackles, 44 sacks and one interception in 160 games.

Porter played the first eight seasons of his 13-year career with Pittsburgh. The four-time Pro Bowl selection also played two seasons with the Cardinals and three with the Dolphins.

Parker played for the Steelers from 2004-09, rushing for 5,378 yards and 24 touchdowns. He rushed for over 1,000 yards from 2005-07.

Marvel Smith was an offensive lineman for the Steelers from 2000-08.