Event: Division 4

Opponent Rating Result
Gayatri Pasricha 1631 0 - 1
Andy Johnson 1587 0 - 1
Trevor Reece 1332 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1117 = (4550 + 400 * (0 - 3)) / 3)

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