Event: E Division

Opponent Rating Result
Lee O 1561 0 - 1
Yin Chu 1448 ½ - ½
Khalid Khokhar 1510 1 - 0
Des Lougheed 820 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1435 = (5339 + 400 * (2 - 1)) / 4)

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