From OpenStreetMap Wiki
|sport = balle_pelote|
|Used on these elements|
|Tools for this tag|
|This tag page is a stub. You can help OpenStreetMap by expanding it.
Similar pages for structural reference: Tag:railway=tram, Tag:waterway=dock.
Description from sport=*:
Related terms: ‹ balle_pelote ›
Caution : this seems to be different from sport=pelota, which is used for the Bask sport.