Event: JTCC South London

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Opponent Rating Result
Bowen Chen 1302 0 - 1
Giulio Buanne 1349 0 - 1
James Bourne 703 1 - 0
Taiyan Lu 985 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

885 = (4339 + 400 * (1 - 3)) / 4)

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