Castro was the standout on defense with active play across 29 snaps, leading the team in tackles. His performance during the game supported the safeties’ solid showing, even as the cornerbacks faltered. If Castro maintains this pace, Pittsburgh could rely on him as a defensive contributor who can handle both run support and coverage duties.

Castro led Pittsburgh with five combined tackles and showed roaming range at defensive back, underscoring his playmaking burst. In a crowded safety room, his coverage appetite and special-teams potential keep him squarely in the roster conversation, with a path to a sub-package or even a situational role if he keeps harrying ball carriers.

Sebastian Castro, an undrafted free agent from Iowa, has quickly become a focal point for the Steelers' offseason strategy, hinting at his potential to make an immediate impact on the team’s defense, particularly in light of his impressive collegiate career.

Sebastian Castro, an undrafted rookie safety, aims to prove his worth to the Steelers' secondary. His determination and performance in training camp could shape his future with the franchise.

Sebastian Castro is emerging as a key player for the Steelers, with strong coverage skills and a knack for disrupting plays, making him a focal point for the defense this OTA season.