Event: Cornwall League 2023

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Opponent	Rating	Result
Richard AL Smith	1761	½ - ½
R Keith Brewer	0	1 - 0
Peter Doubleday	1474	1 - 0

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

1345 = (3235 + 400 * (2 - 0)) / 3)