Pittsburgh Steelers sign Isaiah Dunn, Trenton Thompson

The Steelers signed two defensive backs, Wednesday, in a flurry of roster moves that included cutting one player and placing another on injured reserve.

Pittsburgh announced it signed safety Trenton Thompson and cornerback Isaiah Dunn. The team waived injured running back Alfonzo Graham. And the Steelers placed cornerback Cory Trice Jr on injured reserve.

Dunn, who starred for Oregon State, was most recently with the Seattle Seahawks. An undrafted free agent,, he also played for the Jets. Thompson played for Georgia. And he’s taken a longer route to the Steelers with stops in the CFL, XFL and Indoor Football League.

This is a developing story.