Event: Division Four

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Opponent	Rating	Result
Mike J Groombridge	132	0 - 1
Dave Hodkinson	119	½ - ½
Ray Hall	132	½ - ½
Don S Curry	131	1 - 0
David Molineux	120	½ - ½
Julie C Wilson	136	½ - ½
Rob Bricknell	137	½ - ½
Ian Ellis	0	0 - 1

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

63 = (907 + 400 * (1 - 2)) / 8)