PITTSBURGH — The Pittsburgh Steelers signed tight end David Johnson, their seventh-round draft pick, to a three-year contract.

Johnson's contract means the Steelers have signed seven of their nine picks from the NFL draft in April.

Johnson was the Steelers last pick in the draft. He caught 22 passes for 356 yards and five touchdowns during his final season at Arkansas State.

First-round pick Evander Hood and third-rounder Kraig Urbik are still unsigned.

The Steelers open training camp July 31.