Event: Division 3

Opponent Rating Result
David Helps 1697 0 - 1
Claudio Moni 1735 1 - 0
Inga Jirgensone 1452 ½ - ½
Alex Cooper 1633 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1729 = (6517 + 400 * (2 - 1)) / 4)

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