Event: Division 2

Opponent Rating Result
Karl Barnsley 1009 1 - 0
Brian Smith 1831 ½ - ½
Scott Riley 1934 0 - 1
Eric Mansfield 1448 ½ - ½
Mark R Stollery 1701 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1665 = (7923 + 400 * (2 - 1)) / 5)

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