Event: Derby & District Division 2

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Opponent	Rating	Result
John S Shaw	1739	1 - 0
Chris A Fraser	1556	½ - ½
Mike P Maher	1646	1 - 0

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

1914 = (4941 + 400 * (2 - 0)) / 3)