Event: C Division

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Opponent	Rating	Result
Gareth NR Griffiths	1733	0 - 1
Julian A Alderton	1600	1 - 0
Julian C Clissold	1724	1 - 0
Tom DA Green	1863	1 - 0
Ian Mitchell	1606	1 - 0
Neil C Dainty	1448	1 - 0
Michael Oszczyk	1783	1 - 0
Mohammed Rohman	1486	1 - 0

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

1955 = (13243 + 400 * (7 - 1)) / 8)