Event: IM Brown Shield

Opponent Rating Result
John R Mercy 1795 ½ - ½
Roger W Jennings 1916 0 - 1
Andrew D Bettley 1800 0 - 1
Clive W Davies 1825 0 - 1
Mark Waterhouse 1702 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1568 = (9038 + 400 * (0 - 3)) / 5)

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