Event: Clough (Handicap)

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Opponent	Rating	Result
Kenneth W Parkin	107	½ - ½
Ian Goater	0	½ - ½
Stephen Burton	111	0 - 1

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

-61 = (218 + 400 * (0 - 1)) / 3)