Event: Thornaby Junior Chess Open Under 11

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Opponent Rating Result
Dara Jafari 813 0 - 1
Keith Barker-Chapman 0 0 - 1
Mehek Malik 0 1 - 0
Ben Pearson 0 0 - 1
Sebastian Green 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-77 = (813 + 400 * (1 - 4)) / 5)

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