Event: Autumn League

Opponent Rating Result
Ian P Blencowe 1633 0 - 1
Kevin N Bendall 1620 1 - 0
Alex Carey 1630 1 - 0
Graham K Brown 1785 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1667 = (6668 + 400 * (2 - 2)) / 4)

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