Event: Division 2

Opponent Rating Result
Dave R Wingrove 1355 ½ - ½
Robert Lacey 1262 1 - 0
Kevin N Bendall 1606 ½ - ½
Matthew J Munden 1549 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1643 = (5772 + 400 * (2 - 0)) / 4)

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