Eagle Rock Energy Partners (UNKNOWN:EROC.DL) sure has seen better days. After a lousy quarter and a distribution cut, investors might be wondering if Eagle Rock has hit bottom. And if so, is the stock's 14% drop this month a buying opportunity?

In this video, Fool.com contributor Aimee Duffy utilizes the performance of NuStar Energy (NYSE:NS), another stock having a rough go of it, to demonstrate why Eagle Rock Energy may not be a buy any time soon.