Event: December APA (5|2)

Opponent Rating Result
Edward Hackford 1536 0 - 1
Peter WL Clough 1727 0 - 1
Tony R Larner 1510 0 - 1
Michael J Gibbons 1743 0 - 1
Jacob Mulligan 1316 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1326 = (7832 + 400 * (1 - 4)) / 5)

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