Event: Derby & District Division 3

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Opponent Rating Result
Matthew Caswell 1641 0 - 1
Pierre Reynaud 1539 ½ - ½
George K Heath 1477 ½ - ½
Nigel Beard 1497 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1439 = (6154 + 400 * (0 - 1)) / 4)

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