Event: Division 2

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Opponent Rating Result
Chris Lake 1806 0 - 1
Michael J Reddie 1794 ½ - ½
Steve Merchant 1588 ½ - ½
Nicholas H Skinner 1850 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1560 = (7038 + 400 * (0 - 2)) / 4)

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