Event: All Play All

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Opponent Rating Result
Michael Williams 1404 1 - 0
Michael Williams 1404 1 - 0
Patrick Dillon 1658 ½ - ½
Andrew M Thompson 1197 1 - 0
William F Harris 1597 1 - 0
Tim Fox 1360 1 - 0
Barry Perchard 1505 1 - 0
Peter W Leask 1185 1 - 0
Clifford H Walker 1509 1 - 0
Patrick Dillon 1661 ½ - ½
Thomas Overthrow 1572 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1787 = (16052 + 400 * (9 - 0)) / 11)

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