Event: Division 2

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Opponent Rating Result
Stephen R Cooper 1394 ½ - ½
Christopher Taylor 1549 0 - 1
Stephen R Cooper 1394 1 - 0
Roger R Pearson 1027 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1441 = (5364 + 400 * (2 - 1)) / 4)

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