Event: Ron Bruce League

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Opponent	Rating	Result
Brian Medhurst	1693	½ - ½
Michael H Stinton-Brownbridge	1889	½ - ½
Adam Hart-Davis	1721	1 - 0
Adam Hart-Davis	1721	1 - 0
Nick J Butland	1957	½ - ½
Nick J Butland	1957	0 - 1
Brian Medhurst	1693	½ - ½
Scott A Crockart	0	0 - 1
Scott A Crockart	0	0 - 1

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

1359 = (12631 + 400 * (2 - 3)) / 9)