Rams coach Jeff Fisher confirmed the expected with reporters on Monday, announcing that Richardson will start in Week 1 against the Arizona Cardinals.
Richardson entered camp in a competition with Isaiah Pead, Zac Stacy, and Benny Cunningham. Pead -- a second-round pick in 2012 -- failed to make an impact with his first-team reps Saturday against the Green Bay Packers.
It's worth noting that Pead wasn't going to be part of the Rams' game plan against the Cards anyway. Pead is suspended Week 1 for violating the NFL Policy and Program for Substances of Abuse.