I have a theory on what's been going on with Marcus. I think the regression this year is due to two factors. First, he's probably not been 100% throughout the year and the hammy took a while to get whole again. And that lower leg of his may still need a tweak post season. But the other more important factor is that I think NFL defenses have finally caught up to him and he's having trouble adjusting. This isn't unusual...we often see it in year 2 or 3 of a QB's career. Years ago I had the pleasure of meeting Titans safety Michael Griffin just after he'd gotten drafted but before he'd played a down in the NFL. A friend of mine had built his new home and he and I got into his truck to get his cable boxes at Comcast (since I knew where the place was). During the drive, I commented on Vince Young's opening season success. Griff on the other hand was more circumspect. He played on the same University of Texas team with VY so he'd gotten to chance to practice against the guy for a long time. He said "Yeah, but VY does the exact same move every time before he runs with the ball, and he always runs left". At that point I said to myself "Uh oh! If he's knows that, how long will it take defensive coordinators in the NFL to figure this out". This answer was, not long at all. Season 2 was not like season 1 and everything went downhill from there. Marcus Mariota entered the NFL with a reputation of not throwing picks. His first training camp got through nearly pick free. And the first two seasons also bore that out. But I think the defensive world has scouted him enough to figure him out and it's shown this year. And as I said before, injuries which hampered his mechanics haven't helped either. No one can say that Mariota doesn't have the competitive guts to survive in the NFL. But the offensive team is going to have to work harder to develop countermeasures for that the defensive coordinators around the league have figured out about him so he can get back to having more TDs than INTs.