Event: IM Brown Shield

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Opponent Rating Result
Michael I Connor 1785 1 - 0
Jim E Vickery 1845 1 - 0
Dante Doros 1541 1 - 0
Andrew Birtwhistle 1775 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2137 = (6946 + 400 * (4 - 0)) / 4)

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