Event: Division 4

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Opponent Rating Result
Roland Robson 1446 1 - 0
Roger Ball 1458 1 - 0
Mark Reason 1180 0 - 1
Gayatri Pasricha 1570 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1414 = (5654 + 400 * (2 - 2)) / 4)

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