Event: Rochester Championship

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Opponent Rating Result
Tyrone R Jefferies 1555 1 - 0
Keith G Hyde 1840 ½ - ½
Andrew L Gillard 1563 1 - 0
Rob Woolacott 1688 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1762 = (6646 + 400 * (2 - 1)) / 4)

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