Event: NSDCA Division 3

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Opponent Rating Result
Charlie G Swinson 1160 1 - 0
Robert Perry 1108 1 - 0
Philip Grocott 1285 0 - 1
Raymond F Rhodes 1236 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1297 = (4789 + 400 * (2 - 1)) / 4)

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