Event: Division Three

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Opponent Rating Result
Jim A Gillespie 1527 1 - 0
Stuart Black 1588 ½ - ½
Joyce H Evans 1068 1 - 0
Chris M Cox 1580 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1541 = (5763 + 400 * (2 - 1)) / 4)

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