Event: Division 4 - Athenaeum Cup

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Opponent	Rating	Result
Andrew Nettleship	92	½ - ½
Geoff Facer	111	0 - 1
Steve Withington	134	½ - ½
Ivan Basarab-Horwath	111	0 - 1
Vlad Shaposhnikov	142	½ - ½
Dean M Hartley	141	0 - 1
Jerome Redhead	126	1 - 0
Chris Allen	0	½ - ½

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

7 = (857 + 400 * (1 - 3)) / 8)