Event: Division 1

Opponent Rating Result
Peter R Laundy 1840 0 - 1
David D'Cruz 1398 1 - 0
Andrew Forrester 1676 ½ - ½
Philip Staniland 1855 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1692 = (6769 + 400 * (1 - 1)) / 4)

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