Jeff:
I am really bothered that architects such as yourself are touting new chemicals as the answer to something. Some of your fellow ASGCA men did the same at the conference in St. Andrews, apparently not knowing that herbicides are pretty much illegal there in Europe.
All:
Poa annua greens are INEVITABLE on the Monterey Peninsula and in San Francisco. There is just not enough sunlight through the year for bentgrass to thrive. And, on top of that, Pebble's tiny greens and the popularity of the course concentrate a lot of traffic in a small area, which increases the stress on the greens.
The greens are worse than before BECAUSE they regrassed the greens before the Open in 2000. They were close to pure bent for a few years after they were rebuilt, before the inevitable transition happened. But, now that the surface has become infiltrated by Poa, they have a bunch of 10-year-old Poa annua that isn't self-selected for drought tolerance or for seedhead production, as the grasses from 15 years ago were [or as Oakmont's Poa annua is].
[Sorry to all the creationists out there for postulating something which suggests natural selection ... for you folks, God has cursed the management at Pebble Beach for messing with His natural system.
]
It is the newer Poa annua (plus the greens running 12.5 on the Stimpmeter) which make the greens so bumpy. There is a way for Tiger and Phil to avoid the problem ... if they keep making bogeys, they will get earlier tee times on the weekend.