Event: A Division

Opponent Rating Result
Giuseppe Magazzu 1982 0 - 1
Virgil Szekely 2172 0 - 1
Sagar Patil 1653 0 - 1
Paul Gregory 1936 1 - 0
Paul Frank 1597 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1788 = (9340 + 400 * (2 - 3)) / 5)

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