Event: Division 2

Opponent Rating Result
Ian K Edgson 1688 0 - 1
Colin D Clark 1609 0 - 1
Norman Hawkins 1558 ½ - ½
Jamie Greening 1751 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1352 = (6606 + 400 * (0 - 3)) / 4)

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