Event: IM Brown

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Opponent Rating Result
Paul Howden 147 0 - 1
Michael Johnson 135 0 - 1
Dave Colledge 141 0 - 1
Chris R Tinker 129 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-262 = (552 + 400 * (0 - 4)) / 4)

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