Event: Division Five

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Opponent Rating Result
Ray Sawyer 103 0 - 1
Penny A Wood 91 ½ - ½
John Wassell 81 0 - 1
Frank Crossley 0 1 - 0
David I Buckley 80 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-89 = (355 + 400 * (1 - 3)) / 5)

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