Event: Internal Rapidplay February

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Opponent Rating Result
Zhuoyi Lin 1139 1 - 0
Malcolm Goldspink 1243 0 - 1
Harris Wilson 1263 0 - 1
Charles Hind 1092 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

984 = (4737 + 400 * (1 - 3)) / 4)

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