Event: Lewisham Club Championship

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Opponent Rating Result
Mehmet Ali 2058 ½ - ½
David C Helsby 1797 ½ - ½
David E Brown 1799 ½ - ½
Mark M Robertson 2082 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1934 = (7736 + 400 * (0 - 0)) / 4)

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