Jason Pinnock: Everything you need to know

The Giants signed Pinnock to a contract Monday, Dan Salomone of the team's official site reports. Pinnock started in seven of 17 regular-season games for the 49ers in 2025 and finished with 41 tackles (27 solo). He played for the Giants in three years prior, and while he served as an everyday starter in that period, Pinnock will likely operate more in a rotational role in 2026 behind Jevon Holland (knee) and Tyler Nubin (neck).

Pinnock played two snaps on special teams and none on defense in Sunday's 30-19 loss to the Buccaneers. Through the first five weeks of the season, Pinnock had played every defensive snap for the 49ers, accruing 17 tackles along the way. The 49ers opted to shake up their defensive backfield for Week 6, however, with Pinnock falling out of the mix entirely while Ji'Ayir Brown moved into a full-time role alongside rookie Marques Sigle, who split snaps with Malik Mustapha at the other safety spot. Pinnock thus appears to be the 49ers' No. 4 safety at the moment, making him unlikely to receive meaningful playing time unless one or two of Brown, Sigle and Mustapha is out with an injury.

Pinnock (heel) was a full participant in Wednesday's practice, Cam Inman of The San Jose Mercury News reports. Pinnock did not play in the Niners' last two preseason games due to a lingering heel injury, but he appears to be past the issue and on track to play against the Seahawks on Sunday. With Malik Mustapha (knee) beginning the season on the reserve/PUP list, Pinnock is slated to serve in a starting role at safety alongside Ji'Ayir Brown.