Event: Division 2

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Opponent Rating Result
Glyn D Valentine 143 1 - 0
Stephen J Emmerton 127 ½ - ½
Sandra G Blackburn 112 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

261 = (382 + 400 * (1 - 0)) / 3)

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