Event: NSDCA Division 4

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Opponent Rating Result
Rowan J Webb 1235 0 - 1
Jack Phillips 1012 0 - 1
Jacob Bateman 800 1 - 0
Rowan J Webb 1100 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

837 = (4147 + 400 * (1 - 3)) / 4)

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