So I removed the tennis courts because:

1.     They are in private residences, and not accessible to the public

2.     Mapping people’s personal backyards seemed dubious, at best, from a privacy standpoint.

I know they are visible from satellite imagery, but I don’t think that alone is reason for inclusion – a map by definition must choose what to include and exclude from the real world.

In this case, I couldn’t see a compelling enough reason to map people’s personal backyards.