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Event: EJCOA South Yorkshire U12

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Opponent Rating Result
Ashish Richard 924 1 - 0
Maxwell Raposo 1138 0 - 1
Mukil Balamurugan 1288 0 - 1
Elizabeth Alexander 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

638 = (3350 + 400 * (1 - 3)) / 4)

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