Rivers played all 16 of his snaps on special teams during the Rams 28-22 NFC divisional-round loss to the Eagles.
Corum rushed three times for eight yards during Monday's 27-9 wild-card win against the Vikings.
Rivers played all 20 of his snaps on special teams in Thursday's 12-6 win over the 49ers.
Rivers did not record a snap on offense and played 11 snaps on special teams during Sunday's 24-19 loss to the Packers.
Rivers rushed six times for 26 yards during Sunday's 24-18 loss against Chicago.
Rivers rushed twice for nine yards during Sunday's 27-24 victory against San Francisco.
Rivers caught his only target for no gain and played three snaps on offense during Sunday's 41-10 loss to the Cardinals.
Rivers rushed twice for 16 yards during Sunday's 26-20 overtime loss to the Lions.
Rivers "seemingly has the best chance to be the No. 3 running back" for the Rams, according to Cameron DaSilva of Rams Wire.
Rivers signed his contract tender with the Rams on Monday.