Event: Billingham Synthonia June Rapid 2023

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Opponent	Rating	Result
Nick Tadd	1257	1 - 0
Graham E Edwards	1302	1 - 0
Paul Weightman	1450	0 - 1

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1470 = (4009 + 400 * (2 - 1)) / 3)