I'm gonna go out on a limb and say he has a large drop off today. His pairing yestereday just played great and I think they fed off of each other. I could be wrong (and probably am).
He is paired again with Rory, although I think he may be intimidated by Tiger on his heels where Rory on the other hand I think is not going to be intimidated. But the next two days are going to see much harder pins and harder greens.
I think he loved the pressure. Until now he's almost been over-confident but since he's started playing with a bit more of a conservative strategy he's played great. I played against him a few times in his last year or two as an amateur and his raw talent as a teenager was incredible. He was hitting it stupidly long back then and putted the lights out. I think he's one of those guys who get a bit intimidated by their own talent and it takes them a while to adjust to the US and to playing smart for 4 days rather than feeling like they could blow away the field each week.