Event: WMA Autumn League Division 2

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Opponent	Rating	Result
Richard F Collett	1318	1 - 0
Fred Biles	1493	0 - 1
John Green	1438	1 - 0
Jack Huffer	1588	0 - 1
Jeremy Humphries	1531	1 - 0
Alan T Woollaston	1600	1 - 0
Richard F Collett	1318	1 - 0
Fred Biles	1493	1 - 0
John Green	1438	0 - 1
Jack Huffer	1588	0 - 1
Jeremy Humphries	1531	0 - 1
Alan T Woollaston	1600	1 - 0

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

1561 = (17936 + 400 * (7 - 5)) / 12)