Event: NSDCA Division 4

Opponent Rating Result
Michael Keenan 1326 0 - 1
Adam Fields 1416 0 - 1
Christopher Brian 1224 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1189 = (3966 + 400 * (1 - 2)) / 3)

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