Event: D&DCL Div 2

Opponent Rating Result
Jerome Redhead 1585 0 - 1
George Moorcroft 0 0 - 1
Peter Ellis 0 0 - 1
Ray Sawyer 1563 0 - 1
Graham Smith 0 0 - 1
Vaughan WG Smith 1593 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

390 = (4741 + 400 * (0 - 6)) / 6)

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