Event: Division 3 East

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Opponent Rating Result
Andrew C Gredziak 110 ½ - ½
Graeme Lane 80 1 - 0
David Sherborne 90 0 - 1
Ian R Saint 38 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

180 = (318 + 400 * (2 - 1)) / 4)

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