Event: Division 5

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Opponent Rating Result
Richard Ward 1528 1 - 0
Dorothy M Blampied 1229 1 - 0
Michael James 926 1 - 0
Roger Southward 1132 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1504 = (4815 + 400 * (3 - 0)) / 4)

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