49ers running back Christian McCaffrey has been dealing with calf and Achilles injuries, leading to limited participation in practice. Despite being labeled as 'day-to-day' by head coach Kyle Shanahan, reports suggest that McCaffrey is unlikely to play against the Vikings in Week 2. The situation will be monitored closely as updates are provided.

• Christian McCaffrey's status is uncertain for Week 2.
• Limited practice participation raises concerns about his availability.