Event: Division 3

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Opponent Rating Result
Dave Tomlin 1435 0 - 1
Madeleine Dupree 1253 0 - 1
Eamonn G Howard 1293 0 - 1
Jacob Sanders 1373 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1139 = (5354 + 400 * (1 - 3)) / 4)

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