Event: Week 1

Opponent Rating Result
David A Hallen 1481 0 - 1
Rowan J Webb 1267 0 - 1
S Ali Arshad 1215 0 - 1
Peter Hiscock 1211 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

894 = (5174 + 400 * (0 - 4)) / 4)

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