Event: St Mary's Qualifier

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Opponent Rating Result
Michael Pearson 0 0 - 1
Nikita Djandjgava 0 1 - 0
Philip Blakeman 1057 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

486 = (1057 + 400 * (2 - 1)) / 3)

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