Event: Norman Ellis

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Opponent Rating Result
Paul May 154 1 - 0
Clive W Davies 161 0 - 1
Paul Howden 140 0 - 1
Randolph E Donahue 165 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-45 = (620 + 400 * (1 - 3)) / 4)

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