Event: Derby & District Division 2

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Opponent Rating Result
David Williams 1869 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1469 = (1869 + 400 * (0 - 1)) / 1)

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Opponent Rating Result
Michael WA Hoare 1664 1 - 0
James R Shore 1699 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2082 = (3363 + 400 * (2 - 0)) / 2)