I dont think there is a way. Im 99.9% sure about it.
I wanted same thing some years ago:
https://forums.alliedmods.net/showthread.php?t=270375
If you are interessted i have an awesome ranking system:
https://bit.ly/2Khc3p8
But it includes a clan / war / mix plugin which i think you are interested in also
( admins allways starts the match without any .ready shit - new plugin)
People write .top in the server and they see this (unlimited player numbers):
https://bit.ly/2Khc3p8
People write .rank and they see this (their own stats):
https://bit.ly/2KfrGx6
It only counts when match is live.
It also shows best players of the match like this but slightly different and it works. (
Not like your plugin - which doesnt seem to work )