Event: Division 2

Opponent Rating Result
Clive Edwards 1797 ½ - ½
John Whitfield 1808 ½ - ½
Ronnie Whiteside 1759 0 - 1
Steven M Flaherty 1620 0 - 1
Peter Dickinson 1551 ½ - ½
Ed Lambert 1358 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1582 = (9893 + 400 * (1 - 2)) / 6)

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