Event: B&DCL Div 4

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Opponent Rating Result
Tony Ackerman 1497 ½ - ½
John R Bowley 1599 0 - 1
Tim Rushworth 1400 ½ - ½
Jake Grubb 1480 0 - 1
Mark W Spalding 1391 ½ - ½
Simon Errington 1550 ½ - ½
Ken Dixon 1477 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1371 = (10394 + 400 * (0 - 2)) / 7)

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