Event: BCL Division 2

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Opponent Rating Result
Dave Wells 1682 0 - 1
Colin J Solloway 1656 0 - 1
Peter S Gill 1700 1 - 0
Peter S Gill 1700 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1685 = (6738 + 400 * (2 - 2)) / 4)

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