Event: Ron Bruce League

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Opponent	Rating	Result
Martin Quinn	1782	½ - ½
Nick J Butland	1957	1 - 0
Robert G Wilby	1662	1 - 0
Adam Hart-Davis	1721	½ - ½
Scott A Crockart	0	0 - 1
Brian Medhurst	1693	0 - 1
Nick J Butland	1957	0 - 1
Scott A Crockart	0	0 - 1

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

1247 = (10772 + 400 * (2 - 4)) / 8)