Event: OTB U1650 Ladder

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Opponent Rating Result
Laurence Duffy 1597 1 - 0
Tu Senan 1474 0 - 1
Ivan Hutcheson 1503 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1391 = (4574 + 400 * (1 - 2)) / 3)

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