Event: Division 1

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Opponent Rating Result
Mark W White 2070 ½ - ½
Richard M Cowan 2013 1 - 0
AJ (Tony) Slinger 1918 ½ - ½
Simon D Arnold 1868 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2167 = (7869 + 400 * (2 - 0)) / 4)

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