Event: St Mary's Qualifier

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Opponent Rating Result
Jack Gibson 1588 0 - 1
Peter Hales 0 0 - 1
Euan Dovey-McKay 1357 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

582 = (2945 + 400 * (0 - 3)) / 3)

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