Conditions are bad out there this morning, a lot of bad scores, although Sergio would probably be tanking right now, regardless of the conditions. He's always been one of the most talented guys up there, but doesn't have it mentally to keep it together for four rounds of a major. Not that he's done or anything (I'd love to see him come back and be in contention on Sunday), but this is too predictable. Maybe it'll be good for him later on; his probably only chance of winning a tournament like this is if he's 4 stokes or so back on Sunday, playing 5-6 groups back, and puts up a good round while the leaders falter.
Dustin Johnson is looking beastly right now. It was just a matter of time for him.
The new cut rules may work against Tianlang (it's now top 50 and those within 10 strokes of the lead), he's at +3 for the tournament (currently T54 and 10 shots out of the lead) with two to go, but he has a very minimal margin of error. If he can play his last two holes at even, I would think he stands at a least a 65-70% chance of making the cut. It's hard to project how the late groups will do, especially since the conditions seem to be improving.