Event: Division 2

Opponent Rating Result
David Bryant 1648 1 - 0
Jonathan Taylor 1554 1 - 0
Robert Hopkins 1353 1 - 0
Peter Orme 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1539 = (4555 + 400 * (4 - 0)) / 4)

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