I don't want to dump on this guy — I have no reason to do so — but I must empathize with him. Can you imagine the pressure that he is under, with his pedigree and the resulting elevated expectations? This alone could account for his "shaky performance".
Arch Manning says he must play better after boos from Texas fans
Now, this for perspective: The fans were booing even though Texas beat UTEP, 27-10!