http://www.csnne.com/new-england-patriots/nfl-keeps-shaking-tree-patriots-deflategate
First, it appears the league believed it could “catch” the Patriots with underinflated footballs. But it seems as if the evidence (recorded measurements prior to the game, at halftime and setting those balls aside) didn’t happen. So the league needs somebody with the Patriots to sing. Which is why they’ve been through Gillette Stadium more than once interviewing all ball-touchers.
All’s not lost if the league can’t get that, though. Goodell’s acknowledgment that the investigation will stretch back into prior games (perhaps prior seasons?) and the initial statement saying “cooperation from other clubs” would be sought means that anecdotal evidence is going to be in play.
So if the Ravens, Steelers, Jets or Bills want to ring up Park Avenue and say, “Hey, we thought they had soft balls in November of 2010…” that information will find a friendly ear.