Event: Middle School House Chess Competition

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Opponent	Rating	Result
Freddie Thomson	0	0 - 1
Abdulrahman Alli	0	0 - 1
Joey Thompson	791	0 - 1

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

-136 = (791 + 400 * (0 - 3)) / 3)