Event: A&B Division

Opponent Rating Result
Nikhil Bhandari 1695 0 - 1
Dominic Leigh 1687 ½ - ½
Andrew M Smith 1911 0 - 1
Jim A Rogers 1627 1 - 0
Sagar Patil 1650 1 - 0
Robert Brown 1509 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1613 = (10079 + 400 * (2 - 3)) / 6)

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