Rookie Tre Mason started last week's win over the San Francisco 49ers, but Fisher said the team will not commit to a single running back. Mason, the team's third-round pick out of Auburn, had 19 carries for 65 yards last week and has 222 rushing yards in four games this season.
"We're gonna continue with the same thing," Fisher said Monday. "I can't tell you who's starting this week."
Zac Stacy, who leads the team with 257 rushing yards, was active but did not play against the 49ers. Since he missed the team's Week 7 loss to the Seattle Seahawks, Stacy's carries have dropped significantly.
"Zac has handled things professionally," Fisher said. "Unfortunately, he didn't get to play (Sunday). But he will get to play. He'll get his reps. We have not lost faith or confidence in him. But it's hard to spread the ball around."
St. Louis is No. 28 in both points and total yards this season. As a team, the Rams have rushed for 1,090 yards, which ranks No. 22 in the league.
The Rams are 3-5 and in fourth place in the NFC West. They play at the Cardinals at 4:25 p.m. on Sunday.
- Paul Palladino