Niners LB Dre Greenlaw appears likely to miss the final two games of the season with soreness in his calf. That's, of course, a more significant issue for Greenlaw than it might be for others because he's coming off an Achilles' tear from last year's Super Bowl. Greenlaw returned to play 30 snaps in Week 15, his first action since the injury. But he made it through just 4 snaps in Sunday's loss to the Dolphins.