Event: Durham League Division B

Opponent Rating Result
Stephen Carter 1737 0 - 1
Stephen J Hall 1837 ½ - ½
Jack Lally 1830 1 - 0
Graham W Matthews 1626 0 - 1
Philip Brooks 1572 1 - 0
Jonathan Sams 1829 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1672 = (10431 + 400 * (2 - 3)) / 6)

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