It's been a disappointing season for the Pittsburgh Steelers' defense in 2025. Aside from a few standout performances, the league's highest-paid unit has struggled to slow down opposing offenses. They rank near the bottom of the league in multiple categories, only being saved by their ability to force turnovers at an elite rate.
Still, weaknesses in the secondary have been too easily exploited by veteran quarterbacks. Safety Juan Thornhill has been one of the more disappointing members of that group, and the Steelers decided to cut ties with him Monday night.
In his place, they are claiming rookie safety Sebastian Castro off waivers from the Tampa Bay Buccaneers.