Event: D&DCL Div 1

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Opponent Rating Result
John Molyneux 2114 0 - 1
Norman J Davies 1713 1 - 0
David JF Woodhouse 1630 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1819 = (5457 + 400 * (1 - 1)) / 3)

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