Event: Division 2

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Opponent Rating Result
Andrew N Salmon 1835 0 - 1
Nolan Pereira 1400 0 - 1
Michael Mason 1600 1 - 0
Richard Roberts 1550 ½ - ½
Mark Oakden 1672 1 - 0
David Harrington 1500 1 - 0
Michael Harrison 1383 0 - 1
Samuel Porter 1250 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1574 = (12190 + 400 * (4 - 3)) / 8)

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Opponent Rating Result
Samuel Porter 1250 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

850 = (1250 + 400 * (0 - 1)) / 1)