Grant (hamstring) is considered week-to-week, Ian Rapoport of NFL Network reports.
Grant was forced out of Sunday's narrow loss to the Chiefs early, and it looks like he isn't a lock to return against the Patriots in Week 15. With DeVante Parker (leg) and Mike Gesicki (shoulder) both also having been forced out Sunday, and Preston Williams (foot) already on IR, the Dolphins' pass-catching corps can scarcely afford more attrition.