Oakland Raiders running back Latavius Murray will not play Sunday against the St. Louis Rams because he did not pass the league’s concussion protocol, coach Tony Sparano said.

Murray was the catalyst for the Raiders’ first victory of the season, rushing for two touchdowns in a 24-20 win over the Kansas City Chiefs last Thursday.

Murray ran for a career-high 112 yards on four attempts, scoring from 11 and 90 yards, but he suffered a concussion.

He took part in individual drills Wednesday but was ruled out Friday, for now scuttling Sparano’s stated plans to get Murray more work in the backfield in the final month.

The second-year running back had played mostly on special teams until last week as veterans Darren McFadden and Maurice-Jones Drew received most of the carries out of the backfield.