Event: 2nd Portishead Rapid U18

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Opponent Rating Result
Ashish Antony 0 0 - 1
Oliver Hammond 0 0 - 1
King Lun Lam 0 0 - 1
Mark Blasi 0 0 - 1
Curtis James-Britton 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-400 = (0 + 400 * (0 - 5)) / 5)

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