Marques Sigle: Everything you need to know

Sigle finished the 2025 regular season with 52 tackles (28 solo) and two passes defended across 15 active games with the 49ers. The fifth-round rookie began his pro career making five starts in place of injured S Malik Mustapha. Sigle accrued 39 of his 52 combined tackles during that brief span, showing flashes of IDP utility should he ever be asked to start down the line. The 23-year-old figures to serve as a primary backup safety behind Mustapha and Ji'Ayir Brown in 2026, especially with fellow backup S Jason Pinnock set to become an unrestricted free agent this upcoming offseason.

Sigle (coach's decision) is inactive for Sunday's game against the Giants, Briana Jeannel of the 49ers' official site reports. The safety started the first seven games of the season and played on every defensive snap from Week 1 to Week 5, but he saw his playing time drop from 62 percent of the defensive snaps to 31 percent to zero over the last three weeks, following the return of Malik Mustapha (knee) from injured reserve. Jason Pinnock is serving as San Francisco's third safety behind Mustapha and Ji'Ayir Brown.

Sigle recorded two tackles (one solo) while playing just 31 percent of San Francisco's defensive snaps in Sunday's 20-10 win over Atlanta. Sigle played every one of San Francisco's defensive snaps from Week 1 to Week 5, but he dipped to a 62 percent share upon the return of Malik Mustapha from IR in Week 6 versus Tampa Bay. The rookie safety's defensive snap share then dropped to 31 percent Sunday, with Mustapha at 69 percent and Jason Pinnock at 35 percent. David Lombardi of SFStandard.com suggests that Mustapha will ultimately be a regular starter while Sigle, Pinnock and Ji'Ayir Brown -- who played every defensive snap Sunday -- contend for the No. 2 spot.