Richardson (hamstring) was placed on injured reserve Saturday, Adam Schefter of ESPN reports.
It's a disappointing end to Richardson's season, as the 27-year-old simply couldn't get on the field after aggravating a hamstring injury in Week 11. It'll be interesting to see how the Redskins handle Richardson's contract in the offseason, as the former Seahawk has played in just 17 of a possible 32 games since joining the Redskins two years ago. Cutting Richardson would save the Redskins $2.5 million in cap space next year.