That person that plays only 1 game, and goes 1 and 10 still has a kd. It's .1, and that .1 counts just as much toward the average kd as a person with 1000 kills and 1000000 deaths. They both have a .1 and that .1 counts just as much as the guy that played 1 game and went 8 and 1. Average kd is your kd plus my kd divided by 2. It works like that regardless of the number of players and regardless of the number of kills a person has. Because we're using averages... An average of averages.. Its simple. There's a difference between the total kd and the average kd globally.