Event: Division 2

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Opponent Rating Result
W John Marshall 1745 ½ - ½
Robert Smart 1353 1 - 0
Steve Merchant 1543 1 - 0
Derek Cosens 1674 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1879 = (6315 + 400 * (3 - 0)) / 4)

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