Event: D&DCL Div 2

Opponent Rating Result
Peter M Collins 1676 0 - 1
Stephen Lamont 1683 ½ - ½
Ray Sawyer 1603 0 - 1
George K Heath 1313 0 - 1
George Burdell 1729 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1281 = (8004 + 400 * (0 - 4)) / 5)

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