player_manager

This entity is not in the FGD by default.
It should not be put directly in a map because this entity appears automatically.

Class hierarchy
CPlayerResource ↳CBaseEntity
player_resource.cpp

player_manager is a logical entity available in all Source games. This is entity that propagates general data needed by clients for every player (ping, score, deaths, connected, team, alive).

You will not see any info in data table if this entity is killed, you can use this to hide the information.

• 

  Entity is not killed.

• 

  Entity is killed.