Event: 2nd Cornwall Autumn Major

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Opponent Rating Result
Brendan O'Gorman 1824 0 - 1
Megan E O'Brien 1825 0 - 1
Richard Brenton 1574 1 - 0
Alastair JD Marston 1669 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1623 = (6892 + 400 * (1 - 2)) / 4)

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