I saw the title of the following article and immediately suspected that Milwaukee may be mentioned, since I recalled reading long ago about the Brewers’ groundskeepers and their famous field grass designs.
Groundskeepers Display Artistry on the Diamond
I was right.
He was an assistant groundskeeper at Milwaukee County Stadium in 1993 when a concert badly damaged the grass in the outfield. With the support of the head groundskeeper Gary Vanden Berg, Mellor mowed a busy pattern to serve as camouflage. The design, not the damage, was all anyone noticed.
“I still think that was the coolest pattern he ever made,” Vanden Berg said.
Mellor found himself with a niche, and others followed.