Event: Division Four

Opponent Rating Result
Peter JR Oliver 1659 1 - 0
Fred S Dickson 1615 1 - 0
Mark E Tallis 1637 ½ - ½
Mike J Johnson 1578 ½ - ½
George Mitchell 1486 1 - 0
Peter S Banks 1638 ½ - ½
Goran Stepanovic 1315 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1790 = (10928 + 400 * (4 - 0)) / 7)

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