Dominant and deep: 49ers' defensive line at the core of team's turnaround
49ers want to keep Arik Armstead, but it won't be easy - ESPN - San Francisco 49ers Blog- ESPN
San Francisco 49ers DT Arik Armstead out a 'few weeks' with knee sprain - ESPN
49ers pick up Arik Armstead's 5th-year option for 2019
49ers' Arik Armstead 'one of most underrated players' in NFL
Lance 'frustrated' with his mistakes in 49ers' loss to Bears
The strengths and weaknesses of the RPO, and how the 49ers should use it in 2019
49ers 31, Browns 3: Report card
Post-game Quotes: Deebo Samuel, Arik Armstead, Richie James, other 49ers players react to 34-31 win over Rams
Bold Free-Agent Predictions for Every NFL Team in 2020, News, Scores, Highlights, Stats, and Rumors
NFL execs rank the NFC 1-16: Bucs and Packers in front, NFC West power, and weakness up front with Giants and Bears - The Athletic
49ers at Broncos: Arik Armstead out for first time since 2017