Event: R Division

Opponent Rating Result
Phillip J Shaughnessy 1447 0 - 1
Dan Corbishley 1040 0 - 1
Phillip J Shaughnessy 1447 0 - 1
Dan Corbishley 1040 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

844 = (4974 + 400 * (0 - 4)) / 4)

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