Steelers sign four draft picks

The Pittsburgh Steelers are moving fast on their draft signings. The team announced it agreed to terms with four players from their 2010 class: linebacker Stevenson Sylvester, running back Jonathan Dwyer and receivers Emmanuel Sanders and Antonio Brown.

Pittsburgh now has six of this year's 10 draft picks under contract.

The team also made a series of roster moves Tuesday, releasing seven players. Among the players let go by the Steelers were kicker Piotr Czech, linebacker Derrick Doggett and cornerback Trae Williams.