According to the wiki, this would be tagged as:
construction:leisure=pitch
sport=pickleball

https://wiki.openstreetmap.org/wiki/Tag:leisure%3Dpitch

Only things with a signed / official name should be named in OpenStreetMap.
https://wiki.openstreetmap.org/wiki/Good_practice

By the way, Michigan mappers meet each month. In October we are journeying to the centers of Michigan. Details can be seen on the Michigan wiki page.
https://wiki.openstreetmap.org/wiki/Michigan