Event: Rapidplay - Under 7000

Opponent Rating Result
David J Archer 1829 0 - 1
David J Archer 1829 1 - 0
Jack Wills 1621 0 - 1
Jack Wills 1621 1 - 0
Jack Wills 1621 0 - 1
Jack Wills 1621 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1690 = (10142 + 400 * (3 - 3)) / 6)

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