Event: Division 1

Opponent Rating Result
Chris John Evans 1820 1 - 0
Keith R Ingram 1844 ½ - ½
Andrew JD Baruch 2110 ½ - ½
Julian H Summerfield 1866 0 - 1
Gordon SG Christie 1726 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1953 = (9366 + 400 * (2 - 1)) / 5)

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