Event: Minor Division

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Opponent Rating Result
Nigel Moore 1011 1 - 0
Rohan Philip 1284 0 - 1
Joshua Sailsbury 1100 0 - 1
William Durrant-Jones 1000 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

899 = (4395 + 400 * (1 - 3)) / 4)

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