Event: League Division 2

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Opponent Rating Result
Jonathan Mahony 1646 ½ - ½
Andrew Zigmond 1605 1 - 0
Harris Tariq 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1084 = (3251 + 400 * (1 - 1)) / 3)

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