Hi silversurfer!

Per the wiki, every tennis court should be individually tagged and ideally the entire pitch (with fence) should be tagged as a recreation ground.

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"Draw the area of every single tennis court and add leisure=pitch + sport=tennis."

"Tennis courts are typically surrounded by a fenced area. Draw the way of the fence around the court(s) and add barrier=fence. Add any entrances to the fenced area with barrier=gate and connect them to footpaths or other equivalent ways in the surrounding area. The closed 'fence' way containing courts inside it is often tagged with landuse=recreation_ground as well."

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https://wiki.openstreetmap.org/wiki/Tag:sport=tennis

The node for each tennis court will eventually be turned into an area - I literally can't keep enough tasks available here:

https://maproulette.org/browse/challenges/41188
