Event: Essex Summer Rapid Plate

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Opponent Rating Result
Ryan Colclough 1561 0 - 1
Ryan Colclough 1561 1 - 0
Stephen W Berkley 1606 0 - 1
Stephen W Berkley 1606 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1384 = (6334 + 400 * (1 - 3)) / 4)

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