Event: Eton Rapidplay 2019

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Opponent Rating Result
Seb Watkins 101 0 - 1
Nicholas Kaderinig 0 1 - 0
Stewart D Day 84 1 - 0
Jenny Zhan 43 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

257 = (228 + 400 * (3 - 1)) / 4)

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