The San Francisco 49ers have been battling wide receiver injuries since the summer, and things haven’t improved heading into Week 5. It’s yet another chapter in what has been a season-long struggle to keep their wide receiver room healthy. San Francisco also confirmed that quarterback Brock Purdy will miss the game due to a toe injury, meaning Mac Jones will get the start under center. Still, depth is being pushed to its limit, and facing the Rams without Jennings and Pearsall highlights just how thin things have become. The deal came right after he returned from his calf injury in August, giving San Francisco optimism he would be a steady contributor.