Event: Division 1

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Opponent	Rating	Result
Anthony R Corkett	2198	0 - 1
John F Wheeler	1944	0 - 1
Itmam Ekram	1600	1 - 0

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

1781 = (5742 + 400 * (1 - 2)) / 3)