Event: Millar Cup

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Opponent	Rating	Result
Peter LT Blundell	120	0 - 1
Tim Spencer	121	½ - ½
Robert Twigg	70	0 - 1
Robert Cronin	104	0 - 1
Graeme Boxall	99	½ - ½

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

-137 = (514 + 400 * (0 - 3)) / 5)