Some important informations on the OBS settings:

1) When creating the scene where you'll show standings, make sure to CHECK "RESTART PLAYBACK WHEN SOURCE BECOMES ACTIVE" and UNCHECK "HIDE SOURCE WHEN PLAYBACK ENDS"

2) On the standings media, apply "COLOR KEY" filter (not chroma key) with the following settings:
Key Color Type=Custom
Key Color=#1e212a
Similiarity=1
Smoothness=73
Opacity=100
Contrast=0
Brightness=0
Gamma=0