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Event: Average under 1600

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Opponent Rating Result
David K Shaw 1658 ½ - ½
John F Dunn 1200 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1229 = (2858 + 400 * (0 - 1)) / 2)

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Opponent Rating Result
Seb George 1301 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1701 = (1301 + 400 * (1 - 0)) / 1)