Event: Grand Prix

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Opponent Rating Result
Stephen T Welch 0 0 - 1
Chris J Watt 0 0 - 1
W John Trevelyan 0 0 - 1
Aleksander Blicharz 0 1 - 0
Zoya Boozorginia 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-80 = (0 + 400 * (2 - 3)) / 5)

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