Event: Wilson's Chess Squad

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Opponent	Rating	Result
Laxmi Mamidala	1265	0 - 1
Sahil Kohli	1615	0 - 1
Limo Zhu	1450	1 - 0

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

1310 = (4330 + 400 * (1 - 2)) / 3)