Event: Clough (Handicap)

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Opponent	Rating	Result
Paul Budahazi	100	½ - ½
Mark McGinty	107	0 - 1
Stephen Haggas	101	0 - 1
D Strangway	0	0 - 1

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

-223 = (308 + 400 * (0 - 3)) / 4)