This from Spyglass Hill, explaining changes to the 17th hole, which corresponds to what everyone here is saying:
In recent years, it became apparent that one specific green had become almost too difficult to both play and maintain: the 17th. In terms of playability, hole location options were limited due to the green’s severe slope, particularly at today’s championship speeds. Agronomically, the native soil under the green did not allow for proper drainage, leaving the area saturated by any amount of rain.[/font]
In the summer of 2019, both these challenges were addressed with a comprehensive renovation. First, a state-of-the-art drainage system was installed underground. While invisible to the eye, the system includes over 2,000 feet of piping, optimal sand profile, and a SubAir unit. As a result, Bob Yeo, Superintendent at Spyglass, and his maintenance team can better control the moisture content in the green, providing consistent playability year-round.
On the green itself, 1,000 square feet of putting surface was reclaimed from areas that had gradually transitioned to rough over the past five decades, restoring the green back to its original size. In addition, several slopes were gently softened, making them more appropriate for today’s green speeds. As a result, the number of usable hole locations has more than doubled. This means that pros playing in the 2020 AT&T Pebble Beach Pro-Am will face new hole placements for the first time.