Event: Hepolite (Rapidplay)

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Opponent Rating Result
Nick Burton 2020 0 - 1
Nick Burton 2020 0 - 1
Stephen Burton 1465 ½ - ½
Stephen Burton 1465 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1643 = (6970 + 400 * (1 - 2)) / 4)

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