Event: Division 2

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Opponent Rating Result
Denzil P Lobo 139 0 - 1
Grenville Cross 120 0 - 1
Sandra G Blackburn 120 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-140 = (379 + 400 * (0 - 2)) / 3)

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