Event: Division 4

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Opponent Rating Result
Jai Kothari 1563 ½ - ½
Scott Leadbetter 1608 1 - 0
David Carpenter 430 0 - 1
Matt Bourke 430 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

908 = (4031 + 400 * (1 - 2)) / 4)

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