L.S.U vs.Georgia (It's on) Time for the Tigers to Pound you in your backyard

Not that it matters now, but why didn't we take the yards on the first down run? Was the play whistled dead prior to the snap?

I would assume to preserve the down. 1st and 5 vs 2nd and 3 gives us a bit more options. In the end, it didn't matter. TD Tigers!