This wiki was in read-only mode for many years, but can now be edited again. A lot of information will need to be updated.
bz_getPlayerPacketloss
float bz_getPlayerPacketloss (int playerId)
Minimum API Version: 2.0.x or later 
Returns the amount of packetloss the player has.
Parameters: 
playerId  -  Player to lookup. 
Returns: 
Amount of packetloss the player has.