Event: Durham League Division B

Opponent Rating Result
Nathan Ekanem 2009 0 - 1
Stephen Carter 1737 1 - 0
Raymond Stonehouse 1936 ½ - ½
Paul Freeman 1497 1 - 0
Philip Brooks 1572 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1910 = (8751 + 400 * (3 - 1)) / 5)

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