Event: D&DCL Div 3

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Opponent Rating Result
Garry Sands 1590 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1990 = (1590 + 400 * (1 - 0)) / 1)

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Opponent Rating Result
Joe Willgoose 1292 ½ - ½
Matthew Feeney 0 ½ - ½
George Moorcroft 1249 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

847 = (2541 + 400 * (0 - 0)) / 3)