Event: NCCA Williamson Cup

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Opponent Rating Result
Rupert E Guinness 1618 1 - 0
Les G Gladwell 1621 1 - 0
Mark Lim 1917 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1852 = (5156 + 400 * (2 - 1)) / 3)

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