Event: SCL Div 2

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Opponent	Rating	Result
Kevin Sawers	0	½ - ½
Andy I Manning	0	0 - 1
Derek D Priestley	0	0 - 1
Alec Samuels	0	½ - ½
Robin Williams	0	0 - 1

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

-240 = (0 + 400 * (0 - 3)) / 5)