Event: D&DCL Div 1

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Opponent Rating Result
John S Keaveney 1938 ½ - ½
Derek A Jarvis 1900 1 - 0
Owen Crawford 1458 1 - 0
Steven J Burke 1938 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2109 = (7234 + 400 * (3 - 0)) / 4)

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