By Daniel Chavkin The wide receiver had to leave Sunday’s game with the injury. After Cooper Kupp left Sunday’s game vs. the 49ers with an ankle injury, the wide receiver is expected to be day-to-day, NFL Network’s Ian Rapoport reports. According to Rapoport, Kupp has a low-ankle sprain and he believes he “dodged a bullet” thinking that the injury could have been worse. Kupp suffered the injury in the final minutes of the Rams’ 17-point loss to San Francisco, well after the game was decided. The wide receiver appeared to be in pain and needed to be evaluated by the training staff on the sideli…