Event: Roger Goldsmith Div 2

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Opponent Rating Result
Mark Webb 1455 0 - 1
Cristiano Zancarli 1200 1 - 0
Michael Duerinckx 1050 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1102 = (3705 + 400 * (1 - 2)) / 3)

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