Rule No. 2: See Rule No. 1. Pro Football Weekly:

It looks like Commissioner Roger Goodell needs to send out yet another memo.
Two weeks after the leak of LSU cornerback Morris Claiborne’s Wonderlic score prompted Goodell to remind all 32 teams that “certain information obtained during preparations for the Draft, including personal and family details, results of drug tests, scores on the Wonderlic test, and the like, are strictly confidential for club use only and are not to be disseminated publicly under any circumstances,” the TV network/website owned by the NFL has aided and abetted a violation of the terms of that very memo.
Jason La Canfora of NFL Network reports that Ohio State offensive lineman Mike Adams tested positive for marijuana at the Scouting Combine.
Adams, as La Canfora explains it, didn’t know about the positive result when meeting with teams at the Scouting Combine. Obviously, Adams wouldn’t have known; the results aren’t made available until well after the players have left Indy.
But Adams surely knew that he’d smoked marijuana, and if anything he said to teams about marijuana use during Combine interviews was later contradicted by the positive test result, that could be viewed as a far more significant problem than the positive test result.

The rest here.