Daryl Richardson will be the St. Louis Rams’ starting running back when the season opens against the Arizona Cardinals. Head coach Jeff Fisher made the announcement late Monday.

Richardson was competing with Isaiah Pead, Zac Stacy and Benny Cunningham. Pead, a second-round draft pick in 2012, is suspended for Week 1 for violating the NFL Policy and Program for Substances of Abuse. Pead gained 19 yards on 11 carries on Saturday against the Green Bay Packers.