elo calculations seem wrong

[jonathandavis805]

I just ran the "challenge? command" for all the players in our leaderboard and the way it's calculating elo at risk doesn't seem to be right. It may be that I just don't understand the calculation. Feedback would be helpful.

[dblock]

The code is in

slack-gamebot/slack-gamebot/models/match.rb

Line 128 in 88ecc6e

def calculated_elo

- what do you see that's wrong in that screenshot?