Event: League Division Two

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Opponent Rating Result
Stephen Firth 0 0 - 1
Lewis Carroll 1402 0 - 1
Jonathan Mahony 1435 0 - 1
Nathaniel Mackenzie 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

509 = (2837 + 400 * (1 - 3)) / 4)

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