Event: Autumn OTB Division 2

Opponent Rating Result
George Harman 1870 0 - 1
Mohammed Rohman 1473 0 - 1
Michael I Connor 1773 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1572 = (5116 + 400 * (1 - 2)) / 3)

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