Event: NSDCA Division 4

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Opponent Rating Result
Derek Whitehurst 1469 1 - 0
David A Fuller 1463 1 - 0
David A Hallen 1465 0 - 1
Ernest Wilkinson 1401 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1550 = (5798 + 400 * (2 - 1)) / 4)

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