Event: Book Prize - D 24/25

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Opponent Rating Result
Steve Saunders 1031 1 - 0
Rose Saunders 1090 1 - 0
Ian D Parker 1148 0 - 1
James Gray 1241
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1223 = (3269 + 400 * (2 - 1)) / 3)

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