"The ball just keeps rolling and rolling."

Thanks to reader Kevin for this Robert Dvorchak story in the Pittsburgh Post-Gazette looking at the history of the Stimpmeter.

This beautifully sums up Oakmont's greens:

On six of the 18 greens, the surfaces aren't flat enough to get a Stimpmeter reading. The ball just keeps rolling and rolling. So the numbers from the 12 flatter greens are used for the course average.