Event: The Friendly League

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Opponent Rating Result
Peter Hurn 1559 0 - 1
Kevin Miller 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

380 = (1559 + 400 * (0 - 2)) / 2)

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Opponent Rating Result
John Pickersgill 1239 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

839 = (1239 + 400 * (0 - 1)) / 1)