Event: Rapidplay - mini-league

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Opponent	Rating	Result
Lucy Hopkirk	66	1 - 0
Kevin Sivanesan	0	1 - 0
James Hanson	0	0 - 1

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

155 = (66 + 400 * (2 - 1)) / 3)