Stadium Opel Arena by Martinza 
Team ID : 2351 for EvoWeb Patch and CYPES OF
Stadium ID : 009
Installation via Stadium Server :
1. Install Sider 6 ( Recommended Latest Version )
2. Install Stadium-Server by Zlac
3. Extract PES 2020 Stadium with WinRAR Copy stadium folder to
\content\stadium-server\
4. Open map_teams.txt with text editor and copy this line inside map_teams.txt.
2351, 009, Opel Arena, Opel Arena # 1.FSV Mainz 05
5. Save it
6. And now run sider.exe and play PES 2020 via STEAM.
Credits:
@Nisoley
@gavi83