Event: NSDCA Division 4

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Opponent	Rating	Result
Steven P Nixon	1477	0 - 1
Cristian-Gabriel Dragan	1200	1 - 0
Derek Whitehurst	1511	½ - ½
Pawel Stanny	1447	½ - ½
Joe Hulme	1500	1 - 0
J Graham Sands	1550	½ - ½
James Wolstenholme	1586	1 - 0
Cristian-Gabriel Dragan	1279	1 - 0
Derek Whitehurst	1505	0 - 1
Pawel Stanny	1448	1 - 0
Neville S Jones	1451	0 - 1
J Graham Sands	1550	½ - ½

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

1525 = (17504 + 400 * (5 - 3)) / 12)