Event: Div 2 - Weston Trophy

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Opponent	Rating	Result
Andrew Butterworth	1914	½ - ½
John R Mercy	1795	½ - ½
Richard E Desmedt	1789	½ - ½
Ken A McIntosh	1827	½ - ½
Oliver Brennan	1797	½ - ½

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

1824 = (9122 + 400 * (0 - 0)) / 5)