Event: Library Rapidplay April

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Opponent Rating Result
Tashil Lankapura 1214 0 - 1
Zhuoyi Lin 1045 1 - 0
Ajay Selvan 1260 0 - 1
Joseph Machin 1533 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1263 = (5052 + 400 * (2 - 2)) / 4)

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