Event: Division 2

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Opponent	Rating	Result
William Earnshaw	1047	1 - 0
Yihang Sun	1028	0 - 1
Dheer Shah	1361	0 - 1

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

1012 = (3436 + 400 * (1 - 2)) / 3)