Event: Liverpool Qualifier

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Opponent	Rating	Result
Caleb Deng	0	1 - 0
Jason Zhao	0	1 - 0
Alfie Melia	1925	½ - ½

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

908 = (1925 + 400 * (2 - 0)) / 3)