Event: 6-Board Division 1

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Opponent Rating Result
John W Atkinson 1968 1 - 0
David W Stephenson 1893 1 - 0
Tim M Turner 1893 0 - 1
Stephen Crow 1803 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2089 = (7557 + 400 * (3 - 1)) / 4)

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