With no media on campus for the final day of training camp, the Steelers announced they had waived Sweed, their second-round pick in 2008.
The 6-4 wide receiver is infamous in Pittsburgh for several dropped passes, notably drops in consecutive playoff games after the 2008 season, including a dropped touchdown pass in the AFC Championship Game.
Sweed came back in 2009 and dropped a touchdown pass in a 3-point loss in Week 3 to the Cincinnati Bengals. Later that season Sweed was placed on the non-football injury/illness list with "personal issues."
Sweed came back in 2010 only to tear his left Achilles' tendon on the last minicamp workout on May 2.
This year, a combination of shoulder injury and inconsistent hands preceded his release.
Dockery, a six-year veteran, comes to the Steelers after spending four years with the New York Giants (2006-2009) and one year with the St. Louis Rams (2010). Dockery has played in 61 games with 11 starts. He has four career interceptions, including one returned for a touchdown, two forced fumbles and two fumble recoveries.