the green.
At a course I'm familiar with a green underwent substantive reconstruction.
While the green was out of play an area short of the green was mowed as a temporary green.
Initially, it wasn't very good.
However, as it was cut and acclimated itself to be maintained as a green it got better and better.
To the point where it was one of the best greens on the golf course, with the exception that the sloped part of the green became too challenging as the pace of the green increased to a fairly speedy green.
Drainage was great, the undulations, unseen as a fairway, radiated as a green.
For 80 years the area had been a fairway, and yet, without alterning the grasses or reconstructing the soil, that area became a spectacular green.
In light of that, where drainage appears to be satisfactory and contour reasonable, why would anyone build USGA spec greens ?