Event: All Play All

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Opponent Rating Result
Clifford H Walker 1491 1 - 0
Peter W Leask 1193 1 - 0
Clifford H Walker 1484 ½ - ½
Steve K Dean 1822 0 - 1
Andrew M Thompson 1195 1 - 0
Thomas Overthrow 1584 ½ - ½
John Hems 1169 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1591 = (9938 + 400 * (4 - 1)) / 7)

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