Event: Division 4A

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Opponent Rating Result
Peter Ackland 1479 0 - 1
Alessandro Coppola 1367 ½ - ½
Graham Strickland 1447 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1298 = (4293 + 400 * (0 - 1)) / 3)

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