Event: Rapid Play League

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Opponent Rating Result
Charlotte Robson 45 1 - 0
Alexander McCrae 0 0 - 1
Benjamin Pearce 53 0 - 1
Niamh Grace 39 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

34 = (137 + 400 * (2 - 2)) / 4)

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