Event: NSDCA Division 1

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Opponent Rating Result
Gerald Acey 2065 ½ - ½
John R Booth 1871 ½ - ½
Patrick Bennett 1966 ½ - ½
Philip J Cattermole 1790 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2023 = (7692 + 400 * (1 - 0)) / 4)

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