Event: EJCOA South Yorkshire U8/U10

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Opponent	Rating	Result
Hasana Garuda	1135	0 - 1
Albert Biermann	873	0 - 1
Omar Moylayev	0	1 - 0
Vanessa Ashton	783	0 - 1
Kai Abdulla	685	½ - ½

performance = (sum(opponents ratings) + 400(wins-losses)) / games

535 = (3476 + 400 * (1 - 3)) / 5)