Kyle Shanahan provided the latest on Christian McCaffrey, Deebo Samuel, Trent Williams and Dre Greenlaw ahead of the 49ers first practice of the week in Santa Clara Thursday afternoon.
Shanahan told reporters the MRI on McCaffrey's oblique was "encouraging" and he is day-to-day and won't participate at 49ers practice Thursday.
Deebo Samuel (shoulder), Trent Williams (ankle) and Dre Greenlaw (hamstring) will also miss practice and are all day-to-day as well.