Event: A Division

Opponent Rating Result
David Burgess 2050 1 - 0
Dominic M Rabbitte 1950 ½ - ½
Andrew Lewis 1903 ½ - ½
Mark Taylor 1857 ½ - ½
Andy Laurence Coe 1781 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1908 = (9541 + 400 * (1 - 1)) / 5)

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