Event: NSDCA Division 2

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Opponent Rating Result
Roger W Walker 1630 0 - 1
Roger W Walker 1630 0 - 1
Neville Layhe 1638 0 - 1
Neill Harvey-Smith 1590 0 - 1
Carmel J Barwick 1630 0 - 1
George Bulbeck 1546 0 - 1
Nicholas PA Wright 1461 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1304 = (11125 + 400 * (1 - 6)) / 7)

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