Event: Lewisham Club Championship

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Opponent Rating Result
James R Barber 1312 0 - 1
Gustavo Cilleruelo 1685 ½ - ½
Ian F Mills 1474 1 - 0
David Hamilton 1546 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1604 = (6017 + 400 * (2 - 1)) / 4)

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