Not much in Mickelson's press conference, but he did have this to say about the tiered rough:
Q. How much did you end up in the graduated first cut rather than the deep stuff?
PHIL MICKELSON: I remember being in the deepest stuff twice, on 15 and 1. I may have been in it more than that, but I remember those two for sure. That stuff is thick and tough to get it out of. I hit a couple chop shots to get it up and out of that grass and I was okay and I was able to scramble for pars, but it's very, very tough.
The graduated rough, the first cut, you can advance it up by the green. It's hard to hit the green. I don't know if I have actually got one on the surface there. But on the 8th hole I was able to hit it just short of the green and not have too difficult of an up and down, and a couple holes you can get it up by the green, but still, I don't think I ever got one on the green.