Event: B Division

Opponent Rating Result
Dave Toole 1843 ½ - ½
David F Newell 1795 0 - 1
Michael I Connor 1760 1 - 0
Christopher Hodgson 1736 0 - 1
Julian A Alderton 1600 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1747 = (8734 + 400 * (2 - 2)) / 5)

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