Event: Division 4

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Opponent Rating Result
Scott Leadbetter 1657 ½ - ½
Alan G Bice 1591 ½ - ½
Michael J Lord 1600 1 - 0
Jonathan G Young 1607 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1714 = (6455 + 400 * (1 - 0)) / 4)

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