Event: Silver Rook

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Opponent Rating Result
Norman Carr 100 0 - 1
Steve Smith 48 0 - 1
Angelica Rowe 61 0 - 1
Anthony J Lightowler 85 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-227 = (294 + 400 * (0 - 3)) / 4)

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