Event: U1650 Cup

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Opponent	Rating	Result
Amy John	1558	1 - 0
Kenneth Fowler	1450	0 - 1
John Barty	1304	1 - 0

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

1571 = (4312 + 400 * (2 - 1)) / 3)