Event: D&DCL Div 2

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Opponent	Rating	Result
John S Shaw	1772	0 - 1
Paul Williams	1699	1 - 0
Graham Smith	1471	½ - ½
George K Heath	1527	1 - 0
Alex Abdullahi	1507	0 - 1
Joshua Sawyer	1453	0 - 1
Matthew Caswell	1641	1 - 0
Stephen G Wootton	1618	½ - ½

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1586 = (12688 + 400 * (3 - 3)) / 8)