I have updated this .blend with a different soccer stadium because I had 2 models that were essentially the same on my profile and there is no way to delete a file once it is published.
The original soccer stadium is here.https://tinyurl.com/m3qcgto
This stadium is much larger with almost 60000 seats.I have placed
a very low poly version of the seating, nets and field on layer 2.
The grass texture is from CG textures.https://tinyurl.com/mb6sc4h
The skytexture is from this blender artist thread.https://tinyurl.com/3z2zcuw