Event: Division 2

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Opponent	Rating	Result
Elliott Barnett	1702	0 - 1
Lewis Sheehy	1438	0 - 1
Marcus Fung	1713	1 - 0
Ian D Lamb	1611	½ - ½
Zak Walsh	1538	0 - 1

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

1440 = (8002 + 400 * (1 - 3)) / 5)