Event: Division 1

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Opponent Rating Result
Gary C Jackson 1901 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2301 = (1901 + 400 * (1 - 0)) / 1)

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Opponent Rating Result
David M Cotterell 1586 ½ - ½
Richard Liszewski 1847 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1517 = (3433 + 400 * (0 - 1)) / 2)