Arik Armstead might be unsung in NFL, but 49ers know his 'incredible impact'
Position-by-Position Breakdown of the 49ers Initial 2021 53-man Roster
49ers offseason roster: Defensive tackle group needs new leader
Arik Armstead's unselfish play a big reason for 49ers' impressive run defense, says DeMeco Ryans
49ers news: How the defense came crashing down against the Cardinals - Niners Nation
Holdout over, 49ers' Nick Bosa focused on taking next step - ESPN - San Francisco 49ers Blog- ESPN
NFL's top nine defenses in 2022: 49ers, Bills stand tall; Chargers loom after loading up
How Arik Armstead led 49ers pass rush to Rams in title game
49ers will be looking for receiver help
49ers 2023 Roster Breakdown: Defensive Line
Position-by-Position Breakdown of the 49ers Initial 2021 53-man Roster
Five non-quarterbacks who must emerge for 49ers to blossom in 2023 - ESPN - San Francisco 49ers Blog- ESPN
Garoppolo's return feels just like 'Niners football'