Event: WMA Autumn League Division 2

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Opponent	Rating	Result
Phil Wells	1637	1 - 0
Steve Shaw	1600	½ - ½
John S Keaveney	2065	0 - 1
Matthew Coldwell	1630	0 - 1
Phil Wells	1637	1 - 0
Steve Shaw	1600	0 - 1
John S Keaveney	2065	0 - 1
Matthew Coldwell	1630	½ - ½

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

1633 = (13864 + 400 * (2 - 4)) / 8)