Event: Ivan Gromov Online Schools Chess League

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Opponent	Rating	Result
Oscar Lawson	0	0 - 1
Shourya Gupta	1650	0 - 1
Nick Wilmot-Smith	0	0 - 1

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

150 = (1650 + 400 * (0 - 3)) / 3)