Event: Woodhouse Cup

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Opponent Rating Result
Oliver Graham 1856 0 - 1
Hongyi Yu 2097 1 - 0
Jeff N Spratt 2002 0 - 1
Roger Keely 1646 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1900 = (7601 + 400 * (2 - 2)) / 4)

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