Event: Armstrong Cup

Opponent Rating Result
John S Clarke 1795 ½ - ½
Keith D Marshall 1743 1 - 0
Joel Tofield-Brown 1511 1 - 0
Steve Burnell 1776 ½ - ½
Chris M Smith 1721 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1949 = (8546 + 400 * (3 - 0)) / 5)

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