Event: Clough (Handicap)

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Opponent	Rating	Result
Keith Marsh	127	0 - 1
Kenneth W Parkin	99	0 - 1
Peter D Ward	0	0 - 1
Kaspar Uuselu	0	½ - ½
Nick Mullan	104	½ - ½

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

-174 = (330 + 400 * (0 - 3)) / 5)