Event: E (1) Division

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Opponent	Rating	Result
Mohamed Gouda	1585	1 - 0
Steve Taylor	1180	½ - ½
Ermi Preza	1197	1 - 0

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

1587 = (3962 + 400 * (2 - 0)) / 3)