Event: Weymouth U1850 2023

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Opponent Rating Result
Michael J Stanners 1789 0 - 1
Florence Spirling 1687 1 - 0
Robert A Lanzer 1782 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1619 = (5258 + 400 * (1 - 2)) / 3)

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