Event: C Division

Opponent Rating Result
Ammar Alghasra 1350 0 - 1
Rosie Irwin 1249 0 - 1
J Alan Stockley 1438 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

946 = (4037 + 400 * (0 - 3)) / 3)

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