Event: NSDCA Division 4

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Opponent Rating Result
David S Johnson 1546 1 - 0
Finley Thomas 900 ½ - ½
Timothy Weston 1328 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1258 = (3774 + 400 * (1 - 1)) / 3)

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