Hi Cheeselover!

Welcome to OSM :-) Wonderful that you contribute here to improve the data!

One recommendation: Please make less changes per commit. This makes it so much easier to give you tips how to improve your mapping.

For instance, "tennis cort" probably does not qualify as name. It is a property ("tag") of the way you created. Feel free to click on the link below to find out how a fellow mapper improved your contribution.
The documentation on the naming can be found here:
https://wiki.openstreetmap.org/wiki/Names#Name_is_the_name_only

Documentation on tennis courts:
https://wiki.openstreetmap.org/wiki/Tag:sport%3Dtennis

Furthermore, to avoid conflicts and as a courtesy to reviewers, it is recommended to: 

• combine changes in a small geographical area (within a city, district or province)

• keep changes within the same country

• upload/save changes before moving on to map in a different area

 Why? Have a look at the section 
"Geographical size of changesets" on this wiki page:
https://wiki.openstreetmap.org/wiki/Changeset#Geographical_size_of_changesets

Thanks for considering, have a nice day and happy mapping!
Metzor
