there are a couple of articles in the Daily Mail/UK in the sports section on Tiger's practice round and also in the Telegraph/UK
I couldn't get them to copy and paste.
The gist is that the course is playing really hard. If you miss a fairway you will have NO chance of getting it to the green. however I guess Tiger was hitting some unusual bump and run shots into the green. Some were bouncing up to the green and some were low burners just above the ground. I guess on one he deliberately scuffed it and it rolled right up to the green. LOL Anyways Tiger spent 5 hours going around the course and charting ALL of the greens from different pin locations. But the key this week will be HIT THE FAIRWAY. Wind and rain in the forecast for tomorrow.