49ers at Broncos: Arik Armstead out for first time since 2017
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Arik Armstead's broken hand thins out San Francisco 49ers' D-line - ESPN - San Francisco 49ers Blog- ESPN
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49ers defensive line star Arik Armstead suffers knee injury at practice - CBS San Francisco
Arik Armstead provides details of foot injury that kept him out of 49ers-Broncos
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Arik Armstead - San Francisco Chronicle
49ers injury news: Arik Armstead is on schedule to return on time from his foot injury he suffered against the Rams - Niners Nation
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2018 San Francisco 49ers season - Wikipedia