Interesting.I just rewatched the play, LaPorta was past the yard to gain when he turned his head around, the throw brought him backwards, short of the yard to gain.
How the hell does a 3rd year start F* that up? If it is a decent pass at all he likely goes for 6.
I figured it was LaPorta's fault as well.
I'd love to see the video replay as I don't exactly remember the throw.