Event: All Play All

Opponent Rating Result
Robin J Cubbon 1064 1 - 0
Patrick Dillon 1681 0 - 1
Robert Raymond 100 1 - 0
Clifford H Walker 1506 1 - 0
Peter W Leask 1153 1 - 0
Brian Stephenson 1443 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1425 = (6947 + 400 * (5 - 1)) / 6)

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