Event: U1450 Championship

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Opponent Rating Result
Doris Pearce-Niederwieser 1234 0 - 1
Jan Oldham 1347 0 - 1
Ian Maskery 1433 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

938 = (4014 + 400 * (0 - 3)) / 3)

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