Event: Weymouth U2200 2023

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Opponent Rating Result
Keith DF Gregory 1981 0 - 1
Andy Hill 1969 0 - 1
Roger D de Coverly 1997 1 - 0
Mark Thomas 1922 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1767 = (7869 + 400 * (1 - 3)) / 4)

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