Event: Div4

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Opponent Rating Result
Michael Moon 0 0 - 1
Chris Sharp 0 0 - 1
Craig Harrison 111 ½ - ½
Jerome Redhead 0 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-172 = (111 + 400 * (0 - 2)) / 4)

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Opponent Rating Result
Barry W Lings 98 1 - 0
Chris Sharp 0 1 - 0
Jacob Godwin 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

433 = (98 + 400 * (3 - 0)) / 3)