Event: Summer League

Opponent Rating Result
Derek I Lomax 1452 ½ - ½
Matthew Hammond 1714 1 - 0
Tom A Cleverley 1405 0 - 1
Graham K Brown 1812 0 - 1
Steve J Dyer 1699 0 - 1
Robert Lacey 1600 1 - 0
Derek I Lomax 1452 1 - 0
Matthew Hammond 1714 0 - 1
Tom A Cleverley 1405 0 - 1
Graham K Brown 1812 0 - 1
Steve J Dyer 1699 1 - 0
Robert Lacey 1600 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1580 = (19364 + 400 * (5 - 6)) / 12)

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