Nah, a memory being off is no big deal.

But my impression from your recollection was that the Rams run D had been poor since the context of the discussion was about poor run defense.

The reality is, the Rams have hit or exceeded the 4.0ypc benchmark in the last 3 of 4 seasons. That suggests the run D has been pretty good. Not elite but definitely not bad or even merely average.

Oh, and the source was Teamrankings.com