Overview

• Tampa Bay placed safety Rashad Wisdom on injured reserve with a quad injury, creating the roster opening that prompted the move.
• Castro, an undrafted Iowa product converted from nickel to safety in Pittsburgh, had been on the Steelers’ practice squad and has not appeared in a regular-season game.
• Under NFL rules, a player signed off another team’s practice squad must remain on the active roster for at least three weeks.
• Reporting points to joint preseason work with Pittsburgh, where Castro logged five tackles, and he is expected to contribute on special teams.
• With Pittsburgh on its bye, the Steelers will refill their practice squad, while Castro could make his NFL debut for Tampa Bay as early as Week 5.