Event: Division 1

Opponent Rating Result
Georgs Vikanis 2017 0 - 1
Oladejo Olaleye 1896 0 - 1
Chris Ward 1800 0 - 1
Mike J Donnelly 1975 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1622 = (7688 + 400 * (0 - 3)) / 4)

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