Event: Division 2

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Opponent Rating Result
Nicholas H Skinner 1854 1 - 0
Chris Lake 1826 0 - 1
Adrian DP Waldock 1717 ½ - ½
Graham Robertson 1625 1 - 0
Jamie Greening 0 ½ - ½
Dejan Lekic 1679 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1450 = (8701 + 400 * (2 - 2)) / 6)

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Opponent Rating Result
Graham Ewens 1760 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1360 = (1760 + 400 * (0 - 1)) / 1)