Event: Summer League Section 1

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Opponent Rating Result
Phil Bawden 1833 ½ - ½
Mark I Collinson 2073 0 - 1
Andrew D Bettley 1855 1 - 0
Ned Carmichael 1893 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1814 = (7654 + 400 * (1 - 2)) / 4)

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