Event: Mini League

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Opponent Rating Result
Paul RH Clarke 151 0 - 1
Gerhard Quinn 118 1 - 0
Keith J Riach 127 0 - 1
Paul Howden 140 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-66 = (536 + 400 * (1 - 3)) / 4)

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