Event: Division 4B

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Opponent Rating Result
Arnold Berman 1630 ½ - ½
Aston Campbell 0 1 - 0
Graham Strickland 1444 1 - 0
Shaun Walsh 1249 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1281 = (4323 + 400 * (2 - 0)) / 4)

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