Event: Portsmouth Club Championship

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Opponent Rating Result
Paul Barker 1417 1 - 0
Kewal Krishna Bhoi 1751 0 - 1
David C Goddard 1664 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1477 = (4832 + 400 * (1 - 2)) / 3)

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