Event: Derby & District Division 3

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Opponent Rating Result
Michael Oakley 1517 1 - 0
Michael D Boreham 1526 0 - 1
Anushka M. Ramawickrama 1776 0 - 1
Tony O'Donovan 1340 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1540 = (6159 + 400 * (2 - 2)) / 4)

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