Event: ECC OTB 14/10/20

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Opponent Rating Result
Nigel Holland 1345 0 - 1
Andy Malkowski 1787 1 - 0
Andy Malkowski 1787 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1773 = (4919 + 400 * (2 - 1)) / 3)

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