No. And it doesn't have to involve the NSA. Plenty of other agencies, including the DEA, are involved in questionable surveillance techniques.
Between all the employees and contractors they do have an army of people working 24/7/365. But yes, of course they aren't listening to every phone call and reading every email. No one said they were.
Unless it's a call into or outside the United States, for example, if his dealer were to call a supplier in Mexico. And of course there are all those "mistakes" they make which involve Americans. Not to mention they're collecting a massive amount of email content via PRISM as well as hacking directly into the servers of Google and Yahoo.
http://www.washingtonpost.com/world/national-security/nsa-infiltrates-links-to-yahoo-google-data-centers-worldwide-snowden-documents-say/2013/10/30/e51d661e-4166-11e3-8b74-d89d714ca4dd_story.html
If 10 people call his dealer repeating the phrase "I watched the whole game" anyone who might be listening in will probably be able to figure what's up.