Event: Division 2

Opponent Rating Result
Kevin N Bendall 1610 1 - 0
John Lightowler 1666 0 - 1
Richard J West 1664 ½ - ½
Richard Sida 1559 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1725 = (6499 + 400 * (2 - 1)) / 4)

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