Event: Margate 100

Opponent Rating Result
Harry J Sharples 147 0 - 1
Colin G Gregory 118 0 - 1
Owen Hides 91 0 - 1
William GA Frost 34 0(def) - 1
Chris Wyer 25 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-105 = (381 + 400 * (1 - 3)) / 4)

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