Event: All Play All

Opponent Rating Result
Steve K Dean 1823 ½ - ½
Peter W Leask 1191 1 - 0
Clifford H Walker 1485 ½ - ½
Robin J Cubbon 1105 1 - 0
Thomas Overthrow 1573 ½ - ½
Ian Gregory 1908 0 - 1
Andrew M Thompson 1181 1 - 0
Steve K Dean 1838 ½ - ½
John Hems 1170 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1519 = (13274 + 400 * (3 - 2)) / 9)

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