Event: John Newsome Cup: Beginner to 1199

Opponent Rating Result
Daniel Gray 0 1 - 0
Alex Coulthard 0 1 - 0
Leo Stefanakis 957 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

719 = (957 + 400 * (3 - 0)) / 3)

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