Event: Baum Trophy summer league

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Opponent	Rating	Result
Peter A Nickals	1647	1 - 0
Ashley Freeman	1879	0 - 1
Alfie Green	1435	1 - 0

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

1787 = (4961 + 400 * (2 - 1)) / 3)