Event: Armstrong Cup

Opponent Rating Result
Steve Burnell 1809 ½ - ½
Gary L Cornwall 1969 0 - 1
J Dave H Hair 1695 ½ - ½
Steve Burnell 1809 ½ - ½
Dave Jarema 1757 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1808 = (9039 + 400 * (1 - 1)) / 5)

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