Event: Division Three

Opponent Rating Result
Mark A Drugan 1739 ½ - ½
Robert J Purcell 1731 ½ - ½
Robert Marks 1776 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1882 = (5246 + 400 * (1 - 0)) / 3)

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