Event: 2nd Cornwall Online KO

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Opponent	Rating	Result
Philip May	0	1 - 0
Philip J Spargo	0	1 - 0
John DM Nunn	0	0 - 1

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

133 = (0 + 400 * (2 - 1)) / 3)