49ers Press Conference September 13, 2023 3:54 pm Armstead praises Aiyuk's ‘dominant' performance vs. Steelers in Week 1 Arik Armstead had high praise for teammate Brandon Aiyuk and his “dominant” performance against the Steelers in Week 1. 49ers videos 1:45 Shanahan says Deebo to miss ‘a couple weeks' with calf strain 1:28 Is Aiyuk struggling to find rhythm with Purdy after holdout? 1:11 Whitner believes 49ers RB Mason's swag reminiscent of Lynch 3:14 How Mason can continue filling the void left by CMC's injury 1:53 Puni has ‘a lot' to learn after 49ers' tough loss to Vikings