Event: Hepolite (Rapidplay)

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Opponent	Rating	Result
Ash Kay	0	1 - 0
Ash Kay	0	1 - 0
Lee Crawford	1896	0 - 1
Lee Crawford	1896	0 - 1

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

948 = (3792 + 400 * (2 - 2)) / 4)