San Francisco 49ers receiver Brandon Aiyuk is feared to have suffered a torn ACL in Sunday’s loss to the Chiefs, coach Kyle Shanahan told reporters postgame. Aiyuk went down near the end of the second quarter after taking a direct hit to his right knee. It was clear to the naked eye from the impact of the hit that there was a high likelihood the injury was serious, and now the worst case scenario is closer to being confirmed. CLICK HERE to go to PrizePicks and use code ON3 to receive a guaranteed $50 once you play $5 in lineups! Aiyuk will undergo an MRI to confirm the diagnosis of a torn ACL….