Event: Durham League Division B

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Opponent	Rating	Result
Fedir Dyshliuk	0	0 - 1
Paul D McGuigan	0	½ - ½
James Garner	1602	0 - 1
AD Tony Shires	1581	0 - 1
Paul D McGuigan	0	0 - 1
Samuel Greig	1440	½ - ½
Sam Ball	1429	0 - 1

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

579 = (6052 + 400 * (0 - 5)) / 7)