Event: Division 3

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Opponent Rating Result
Phil Drury 1302 0 - 1
Tim J Rossell 1638 0 - 1
Amandeep Singh 1317 1 - 0
Cora Wainwright 1261 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1380 = (5518 + 400 * (2 - 2)) / 4)

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