Event: Hargreaves Shield

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Opponent Rating Result
Chris F Stampe 124 0 - 1
Andrew M Haycock 96 0 - 1
Andrew M Haycock 96 ½ - ½
Chris F Stampe 124 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-190 = (440 + 400 * (0 - 3)) / 4)

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