Event: Division 2

Opponent Rating Result
Mohammed Rohman 1547 0 - 1
Peter Weller 1486 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1117 = (3033 + 400 * (0 - 2)) / 2)

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Opponent Rating Result
George Tebbs 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-400 = (0 + 400 * (0 - 1)) / 1)