Event: Division Four

Opponent Rating Result
John B Lewis 1477 ½ - ½
Paul Heeney 1510 0 - 1
Penny A Wood 1488 0 - 1
Alex McCarthy 68 1 - 0
Saket Singhal 1600 ½ - ½
Jon A Asbury 1585 ½ - ½
Xabier Gutiérrez 0 0 - 1
Roland Robson 1488 0 - 1
Thomas Sanderson 0 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

891 = (9216 + 400 * (1 - 4)) / 9)

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