Event: Wharfedale League 2023

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Opponent Rating Result
Mick Overend 1547 0 - 1
John Tate 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

774 = (1547 + 400 * (1 - 1)) / 2)

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Opponent Rating Result
Paul Butterworth 1789 ½ - ½
Dave Langdale 1628 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1509 = (3417 + 400 * (0 - 1)) / 2)