Rivers leads backfield opportunities

Darrell Henderson led Rams RBs in snaps played in Sunday's loss to the 49ers. But Ronnie Rivers paced the backfield in carries and targets. He managed just 21 yards on his 8 carries (2.6 per rush) and 15 yards on 4 catches, among 4 targets. We'd bet on rookie RB Kyren Williams getting significantly involved once he's ready. We also wouldn't be surprised to see the Rams pick up a RB ahead of Tuesday's trade deadline. Henderson rushed only 4 times for 16 yards and drew 2 targets (2 catches, 14 yards) against San Francisco. It's pretty clear that Sean McVay doesn't believe in him as a primary RB. Malcolm Brown mixed in for 5 carries (10 yards) against the 49ers.

The Rams believe RB Ronnie Rivers has a PCL sprain that "could keep him out a few weeks," according to NFL Network's Ian Rapoport. It's particularly noteworthy with RB Kyren Williams dealing with an ankle injury. Rookie Zach Evans is the only healthy RB on the Rams' active roster. RB Royce Freeman is on the practice squad.

Update: Rivers has a Grade 3 PCL sprain and is expected to miss 4-5 weeks, according to Rapoport. Rivers figures to land on short-term IR.