Event: LCA Division 2

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Opponent Rating Result
Grenville Wollerton 1723 0 - 1
Tom Bertins 475 1 - 0
Alan J Nelder 1635 1 - 0
Glyn G Williams 1465 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1525 = (5298 + 400 * (3 - 1)) / 4)

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