The St. Louis Rams cut former starting running back Daryl Richardson.

The Rams drafted Auburn running back Tre Mason.

Richardson averaged 4.8 yards two seasons ago.

However, he fell to a 3.1 average per run last season.

He dealt with a toe injury.

The Rams' depth chart includes Mason, Benny Cunningham and Zac Stacy.

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Aaron Wilson covers the Ravens for The Baltimore Sun