Event: u1850 County Championship

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Opponent Rating Result
Thomas Stanley 0 ½ - ½
John WF McAllister 1653 ½ - ½
Peter Baddeley 1617 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

957 = (3270 + 400 * (0 - 1)) / 3)

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