Event: Division One

Opponent Rating Result
Martin D Smyth 1909 1 - 0
Adam Routledge 1778 0 - 1
Keith R Ingram 1844 0 - 1
Roger Threlfall 1684 ½ - ½
Nigel S Towers 1837 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1730 = (9052 + 400 * (1 - 2)) / 5)

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