Event: OTB Jul 10 + 5 Rapid

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Opponent Rating Result
Ivan Hutcheson 1428 1 - 0
David Smith 1493 0 - 1
Matthias Lataille 1645 0 - 1
Huw D Jacob 1375 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1285 = (5941 + 400 * (1 - 3)) / 4)

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