Event: Division Five

Opponent Rating Result
David Cleak 1510 1 - 0(def)
Penny A Wood 1406 0 - 1
Malcolm Jones 1235 0 - 1
Andy Bolton 1044 1 - 0
David W Randall 1306 ½ - ½
Nick Glover 1150 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1068 = (6141 + 400 * (1 - 3)) / 5)

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